Home / 156,616.90-234,925.35-90,261.70

Finding the Fourth Proportional to 156,616.90, 234,925.35 and 90,261.70

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Solution

The fourth proportional to 156,616.90, 234,925.35 and 90,261.70 is: 135,392.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,616.90 : 234,925.35 = 90,261.70 : x
  2. Step 2: Convert to fraction form
    156,616.90/234,925.35 = 90,261.70/x
  3. Step 3: Cross multiply
    156,616.90x = 234,925.35 × 90,261.70
  4. Step 4: Simplify right side
    156,616.90x = 21,204,761,464.10
  5. Step 5: Solve for x
    x = 21,204,761,464.10/156,616.90
  6. Step 6: Final answer
    x = 135,392.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.