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Finding the Fourth Proportional to 158,064.76, 218,132.55 and 86,449.39

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Solution

The fourth proportional to 158,064.76, 218,132.55 and 86,449.39 is: 119,301.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,064.76 : 218,132.55 = 86,449.39 : x
  2. Step 2: Convert to fraction form
    158,064.76/218,132.55 = 86,449.39/x
  3. Step 3: Cross multiply
    158,064.76x = 218,132.55 × 86,449.39
  4. Step 4: Simplify right side
    158,064.76x = 18,857,425,886.64
  5. Step 5: Solve for x
    x = 18,857,425,886.64/158,064.76
  6. Step 6: Final answer
    x = 119,301.90

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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.