Home / 445,036.14-667,663.56-129,495.78

Finding the Fourth Proportional to 445,036.14, 667,663.56 and 129,495.78

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Solution

The fourth proportional to 445,036.14, 667,663.56 and 129,495.78 is: 194,275.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,036.14 : 667,663.56 = 129,495.78 : x
  2. Step 2: Convert to fraction form
    445,036.14/667,663.56 = 129,495.78/x
  3. Step 3: Cross multiply
    445,036.14x = 667,663.56 × 129,495.78
  4. Step 4: Simplify right side
    445,036.14x = 86,459,613,479.78
  5. Step 5: Solve for x
    x = 86,459,613,479.78/445,036.14
  6. Step 6: Final answer
    x = 194,275.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.