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Finding the Fourth Proportional to 145,657.75, 218,538.87 and 56,974.90

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Solution

The fourth proportional to 145,657.75, 218,538.87 and 56,974.90 is: 85,482.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,657.75 : 218,538.87 = 56,974.90 : x
  2. Step 2: Convert to fraction form
    145,657.75/218,538.87 = 56,974.90/x
  3. Step 3: Cross multiply
    145,657.75x = 218,538.87 × 56,974.90
  4. Step 4: Simplify right side
    145,657.75x = 12,451,230,264.36
  5. Step 5: Solve for x
    x = 12,451,230,264.36/145,657.75
  6. Step 6: Final answer
    x = 85,482.79

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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.