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Finding the Fourth Proportional to 158,419.26, 218,615.76 and 93,931.92

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Solution

The fourth proportional to 158,419.26, 218,615.76 and 93,931.92 is: 129,624.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,419.26 : 218,615.76 = 93,931.92 : x
  2. Step 2: Convert to fraction form
    158,419.26/218,615.76 = 93,931.92/x
  3. Step 3: Cross multiply
    158,419.26x = 218,615.76 × 93,931.92
  4. Step 4: Simplify right side
    158,419.26x = 20,534,998,079.06
  5. Step 5: Solve for x
    x = 20,534,998,079.06/158,419.26
  6. Step 6: Final answer
    x = 129,624.38

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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.