Home / 129,084,078.38-178,136,031.76-71,137,326.38

Finding the Fourth Proportional to 129,084,078.38, 178,136,031.76 and 71,137,326.38

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Solution

The fourth proportional to 129,084,078.38, 178,136,031.76 and 71,137,326.38 is: 98,169,512.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,084,078.38 : 178,136,031.76 = 71,137,326.38 : x
  2. Step 2: Convert to fraction form
    129,084,078.38/178,136,031.76 = 71,137,326.38/x
  3. Step 3: Cross multiply
    129,084,078.38x = 178,136,031.76 × 71,137,326.38
  4. Step 4: Simplify right side
    129,084,078.38x = 12,672,121,030,280,642
  5. Step 5: Solve for x
    x = 12,672,121,030,280,642/129,084,078.38
  6. Step 6: Final answer
    x = 98,169,512.38

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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.