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Finding the Fourth Proportional to 99,801.45, 149,744.70 and 52,452.90

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Solution

The fourth proportional to 99,801.45, 149,744.70 and 52,452.90 is: 78,701.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,801.45 : 149,744.70 = 52,452.90 : x
  2. Step 2: Convert to fraction form
    99,801.45/149,744.70 = 52,452.90/x
  3. Step 3: Cross multiply
    99,801.45x = 149,744.70 × 52,452.90
  4. Step 4: Simplify right side
    99,801.45x = 7,854,543,774.63
  5. Step 5: Solve for x
    x = 7,854,543,774.63/99,801.45
  6. Step 6: Final answer
    x = 78,701.70

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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.