Home / 119,997.86-165,575.40-77,531.79

Finding the Fourth Proportional to 119,997.86, 165,575.40 and 77,531.79

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Solution

The fourth proportional to 119,997.86, 165,575.40 and 77,531.79 is: 106,979.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,997.86 : 165,575.40 = 77,531.79 : x
  2. Step 2: Convert to fraction form
    119,997.86/165,575.40 = 77,531.79/x
  3. Step 3: Cross multiply
    119,997.86x = 165,575.40 × 77,531.79
  4. Step 4: Simplify right side
    119,997.86x = 12,837,357,141.97
  5. Step 5: Solve for x
    x = 12,837,357,141.97/119,997.86
  6. Step 6: Final answer
    x = 106,979.89

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1.5x scale

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.