Home / 129,084,137-178,136,113.20-71,137,385

Finding the Fourth Proportional to 129,084,137, 178,136,113.20 and 71,137,385

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Solution

The fourth proportional to 129,084,137, 178,136,113.20 and 71,137,385 is: 98,169,593.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,084,137 : 178,136,113.20 = 71,137,385 : x
  2. Step 2: Convert to fraction form
    129,084,137/178,136,113.20 = 71,137,385/x
  3. Step 3: Cross multiply
    129,084,137x = 178,136,113.20 × 71,137,385
  4. Step 4: Simplify right side
    129,084,137x = 12,672,137,267,111,982
  5. Step 5: Solve for x
    x = 12,672,137,267,111,982/129,084,137
  6. Step 6: Final answer
    x = 98,169,593.58

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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.