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Finding the Fourth Proportional to 109,654.97, 151,458.80 and 79,392.35

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Solution

The fourth proportional to 109,654.97, 151,458.80 and 79,392.35 is: 109,659.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,654.97 : 151,458.80 = 79,392.35 : x
  2. Step 2: Convert to fraction form
    109,654.97/151,458.80 = 79,392.35/x
  3. Step 3: Cross multiply
    109,654.97x = 151,458.80 × 79,392.35
  4. Step 4: Simplify right side
    109,654.97x = 12,024,670,041.87
  5. Step 5: Solve for x
    x = 12,024,670,041.87/109,654.97
  6. Step 6: Final answer
    x = 109,659.15

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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.