Home / 151,149.35-208,587.86-86,617.31

Finding the Fourth Proportional to 151,149.35, 208,587.86 and 86,617.31

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Solution

The fourth proportional to 151,149.35, 208,587.86 and 86,617.31 is: 119,532.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,149.35 : 208,587.86 = 86,617.31 : x
  2. Step 2: Convert to fraction form
    151,149.35/208,587.86 = 86,617.31/x
  3. Step 3: Cross multiply
    151,149.35x = 208,587.86 × 86,617.31
  4. Step 4: Simplify right side
    151,149.35x = 18,067,319,331.86
  5. Step 5: Solve for x
    x = 18,067,319,331.86/151,149.35
  6. Step 6: Final answer
    x = 119,532.89

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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.