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Finding the Fourth Proportional to 99,697.39, 149,574.33 and 40,575.49

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Solution

The fourth proportional to 99,697.39, 149,574.33 and 40,575.49 is: 60,874.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,697.39 : 149,574.33 = 40,575.49 : x
  2. Step 2: Convert to fraction form
    99,697.39/149,574.33 = 40,575.49/x
  3. Step 3: Cross multiply
    99,697.39x = 149,574.33 × 40,575.49
  4. Step 4: Simplify right side
    99,697.39x = 6,069,051,731.17
  5. Step 5: Solve for x
    x = 6,069,051,731.17/99,697.39
  6. Step 6: Final answer
    x = 60,874.73

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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.