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Finding the Fourth Proportional to 158,475.60, 218,691.72 and 86,854.32

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Solution

The fourth proportional to 158,475.60, 218,691.72 and 86,854.32 is: 119,856.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,475.60 : 218,691.72 = 86,854.32 : x
  2. Step 2: Convert to fraction form
    158,475.60/218,691.72 = 86,854.32/x
  3. Step 3: Cross multiply
    158,475.60x = 218,691.72 × 86,854.32
  4. Step 4: Simplify right side
    158,475.60x = 18,994,320,630.23
  5. Step 5: Solve for x
    x = 18,994,320,630.23/158,475.60
  6. Step 6: Final answer
    x = 119,856.44

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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.