Home / 99,708.65-149,562.36-42,774.15

Finding the Fourth Proportional to 99,708.65, 149,562.36 and 42,774.15

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Solution

The fourth proportional to 99,708.65, 149,562.36 and 42,774.15 is: 64,160.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,708.65 : 149,562.36 = 42,774.15 : x
  2. Step 2: Convert to fraction form
    99,708.65/149,562.36 = 42,774.15/x
  3. Step 3: Cross multiply
    99,708.65x = 149,562.36 × 42,774.15
  4. Step 4: Simplify right side
    99,708.65x = 6,397,402,820.99
  5. Step 5: Solve for x
    x = 6,397,402,820.99/99,708.65
  6. Step 6: Final answer
    x = 64,160.96

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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.