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Finding the Fourth Proportional to 95,417.10, 143,125.65 and 68,978.70

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Solution

The fourth proportional to 95,417.10, 143,125.65 and 68,978.70 is: 103,468.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    95,417.10 : 143,125.65 = 68,978.70 : x
  2. Step 2: Convert to fraction form
    95,417.10/143,125.65 = 68,978.70/x
  3. Step 3: Cross multiply
    95,417.10x = 143,125.65 × 68,978.70
  4. Step 4: Simplify right side
    95,417.10x = 9,872,621,273.66
  5. Step 5: Solve for x
    x = 9,872,621,273.66/95,417.10
  6. Step 6: Final answer
    x = 103,468.05

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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.