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Finding the Fourth Proportional to 91,711.70, 137,348.85 and 91,711.70

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Solution

The fourth proportional to 91,711.70, 137,348.85 and 91,711.70 is: 137,348.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,711.70 : 137,348.85 = 91,711.70 : x
  2. Step 2: Convert to fraction form
    91,711.70/137,348.85 = 91,711.70/x
  3. Step 3: Cross multiply
    91,711.70x = 137,348.85 × 91,711.70
  4. Step 4: Simplify right side
    91,711.70x = 12,596,496,526.55
  5. Step 5: Solve for x
    x = 12,596,496,526.55/91,711.70
  6. Step 6: Final answer
    x = 137,348.85

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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.