Home / 129,346,979.09-178,045,764.05-112,797,906.35

Finding the Fourth Proportional to 129,346,979.09, 178,045,764.05 and 112,797,906.35

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Solution

The fourth proportional to 129,346,979.09, 178,045,764.05 and 112,797,906.35 is: 155,266,010.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,346,979.09 : 178,045,764.05 = 112,797,906.35 : x
  2. Step 2: Convert to fraction form
    129,346,979.09/178,045,764.05 = 112,797,906.35/x
  3. Step 3: Cross multiply
    129,346,979.09x = 178,045,764.05 × 112,797,906.35
  4. Step 4: Simplify right side
    129,346,979.09x = 20,083,189,418,717,864
  5. Step 5: Solve for x
    x = 20,083,189,418,717,864/129,346,979.09
  6. Step 6: Final answer
    x = 155,266,010.55

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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.