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Finding the Fourth Proportional to 91,832.40, 137,489.40 and 89,240.40

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Solution

The fourth proportional to 91,832.40, 137,489.40 and 89,240.40 is: 133,608.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,832.40 : 137,489.40 = 89,240.40 : x
  2. Step 2: Convert to fraction form
    91,832.40/137,489.40 = 89,240.40/x
  3. Step 3: Cross multiply
    91,832.40x = 137,489.40 × 89,240.40
  4. Step 4: Simplify right side
    91,832.40x = 12,269,609,051.76
  5. Step 5: Solve for x
    x = 12,269,609,051.76/91,832.40
  6. Step 6: Final answer
    x = 133,608.72

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1.5x scale

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.