Home / 129,313,992.52-178,397,331.78-79,080,417.16

Finding the Fourth Proportional to 129,313,992.52, 178,397,331.78 and 79,080,417.16

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Solution

The fourth proportional to 129,313,992.52, 178,397,331.78 and 79,080,417.16 is: 109,096,743.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,313,992.52 : 178,397,331.78 = 79,080,417.16 : x
  2. Step 2: Convert to fraction form
    129,313,992.52/178,397,331.78 = 79,080,417.16/x
  3. Step 3: Cross multiply
    129,313,992.52x = 178,397,331.78 × 79,080,417.16
  4. Step 4: Simplify right side
    129,313,992.52x = 14,107,735,417,393,324
  5. Step 5: Solve for x
    x = 14,107,735,417,393,324/129,313,992.52
  6. Step 6: Final answer
    x = 109,096,743.07

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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.