Home / 129,057,611,329.79-178,100,057,331.81-70,397,711,650.60

Finding the Fourth Proportional to 129,057,611,329.79, 178,100,057,331.81 and 70,397,711,650.60

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Solution

The fourth proportional to 129,057,611,329.79, 178,100,057,331.81 and 70,397,711,650.60 is: 97,149,144,105.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,057,611,329.79 : 178,100,057,331.81 = 70,397,711,650.60 : x
  2. Step 2: Convert to fraction form
    129,057,611,329.79/178,100,057,331.81 = 70,397,711,650.60/x
  3. Step 3: Cross multiply
    129,057,611,329.79x = 178,100,057,331.81 × 70,397,711,650.60
  4. Step 4: Simplify right side
    129,057,611,329.79x = 12,537,836,481,000,090,107,904
  5. Step 5: Solve for x
    x = 12,537,836,481,000,090,107,904/129,057,611,329.79
  6. Step 6: Final answer
    x = 97,149,144,105.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.