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Finding the Fourth Proportional to 105,131.52, 145,059.84 and 60,410.88

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Solution

The fourth proportional to 105,131.52, 145,059.84 and 60,410.88 is: 83,354.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,131.52 : 145,059.84 = 60,410.88 : x
  2. Step 2: Convert to fraction form
    105,131.52/145,059.84 = 60,410.88/x
  3. Step 3: Cross multiply
    105,131.52x = 145,059.84 × 60,410.88
  4. Step 4: Simplify right side
    105,131.52x = 8,763,192,587.06
  5. Step 5: Solve for x
    x = 8,763,192,587.06/105,131.52
  6. Step 6: Final answer
    x = 83,354.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.