Home / 129,662,619,918.76-178,940,007,711.30-71,790,999,271

Finding the Fourth Proportional to 129,662,619,918.76, 178,940,007,711.30 and 71,790,999,271

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Solution

The fourth proportional to 129,662,619,918.76, 178,940,007,711.30 and 71,790,999,271 is: 99,074,675,270.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,662,619,918.76 : 178,940,007,711.30 = 71,790,999,271 : x
  2. Step 2: Convert to fraction form
    129,662,619,918.76/178,940,007,711.30 = 71,790,999,271/x
  3. Step 3: Cross multiply
    129,662,619,918.76x = 178,940,007,711.30 × 71,790,999,271
  4. Step 4: Simplify right side
    129,662,619,918.76x = 12,846,281,963,154,670,878,720
  5. Step 5: Solve for x
    x = 12,846,281,963,154,670,878,720/129,662,619,918.76
  6. Step 6: Final answer
    x = 99,074,675,270.36

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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.