Home / 145,517.64-217,960.11-89,187.72

Finding the Fourth Proportional to 145,517.64, 217,960.11 and 89,187.72

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Solution

The fourth proportional to 145,517.64, 217,960.11 and 89,187.72 is: 133,587.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,517.64 : 217,960.11 = 89,187.72 : x
  2. Step 2: Convert to fraction form
    145,517.64/217,960.11 = 89,187.72/x
  3. Step 3: Cross multiply
    145,517.64x = 217,960.11 × 89,187.72
  4. Step 4: Simplify right side
    145,517.64x = 19,439,365,261.85
  5. Step 5: Solve for x
    x = 19,439,365,261.85/145,517.64
  6. Step 6: Final answer
    x = 133,587.69

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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.