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Finding the Fourth Proportional to 91,807.40, 137,711.10 and 88,599.80

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Solution

The fourth proportional to 91,807.40, 137,711.10 and 88,599.80 is: 132,899.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,807.40 : 137,711.10 = 88,599.80 : x
  2. Step 2: Convert to fraction form
    91,807.40/137,711.10 = 88,599.80/x
  3. Step 3: Cross multiply
    91,807.40x = 137,711.10 × 88,599.80
  4. Step 4: Simplify right side
    91,807.40x = 12,201,175,917.78
  5. Step 5: Solve for x
    x = 12,201,175,917.78/91,807.40
  6. Step 6: Final answer
    x = 132,899.70

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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.