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Finding the Fourth Proportional to 143,375.95, 215,089.80 and 59,089.28

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Solution

The fourth proportional to 143,375.95, 215,089.80 and 59,089.28 is: 88,644.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,375.95 : 215,089.80 = 59,089.28 : x
  2. Step 2: Convert to fraction form
    143,375.95/215,089.80 = 59,089.28/x
  3. Step 3: Cross multiply
    143,375.95x = 215,089.80 × 59,089.28
  4. Step 4: Simplify right side
    143,375.95x = 12,709,500,120.31
  5. Step 5: Solve for x
    x = 12,709,500,120.31/143,375.95
  6. Step 6: Final answer
    x = 88,644.57

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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.