Home / 129,057,611,328.35-178,100,057,329.83-70,397,711,649.17

Finding the Fourth Proportional to 129,057,611,328.35, 178,100,057,329.83 and 70,397,711,649.17

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Solution

The fourth proportional to 129,057,611,328.35, 178,100,057,329.83 and 70,397,711,649.17 is: 97,149,144,103.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,057,611,328.35 : 178,100,057,329.83 = 70,397,711,649.17 : x
  2. Step 2: Convert to fraction form
    129,057,611,328.35/178,100,057,329.83 = 70,397,711,649.17/x
  3. Step 3: Cross multiply
    129,057,611,328.35x = 178,100,057,329.83 × 70,397,711,649.17
  4. Step 4: Simplify right side
    129,057,611,328.35x = 12,537,836,480,605,125,083,136
  5. Step 5: Solve for x
    x = 12,537,836,480,605,125,083,136/129,057,611,328.35
  6. Step 6: Final answer
    x = 97,149,144,103.61

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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.