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Finding the Fourth Proportional to 99,677.70, 137,552.71 and 54,356.55

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Solution

The fourth proportional to 99,677.70, 137,552.71 and 54,356.55 is: 75,010.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,677.70 : 137,552.71 = 54,356.55 : x
  2. Step 2: Convert to fraction form
    99,677.70/137,552.71 = 54,356.55/x
  3. Step 3: Cross multiply
    99,677.70x = 137,552.71 × 54,356.55
  4. Step 4: Simplify right side
    99,677.70x = 7,476,890,758.75
  5. Step 5: Solve for x
    x = 7,476,890,758.75/99,677.70
  6. Step 6: Final answer
    x = 75,010.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.