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Finding the Fourth Proportional to 101,134.80, 151,738.65 and 42,012.90

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Solution

The fourth proportional to 101,134.80, 151,738.65 and 42,012.90 is: 63,034.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,134.80 : 151,738.65 = 42,012.90 : x
  2. Step 2: Convert to fraction form
    101,134.80/151,738.65 = 42,012.90/x
  3. Step 3: Cross multiply
    101,134.80x = 151,738.65 × 42,012.90
  4. Step 4: Simplify right side
    101,134.80x = 6,374,980,728.59
  5. Step 5: Solve for x
    x = 6,374,980,728.59/101,134.80
  6. Step 6: Final answer
    x = 63,034.49

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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.