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Finding the Fourth Proportional to 124,041.29, 171,103.90 and 78,027.59

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Solution

The fourth proportional to 124,041.29, 171,103.90 and 78,027.59 is: 107,632.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,041.29 : 171,103.90 = 78,027.59 : x
  2. Step 2: Convert to fraction form
    124,041.29/171,103.90 = 78,027.59/x
  3. Step 3: Cross multiply
    124,041.29x = 171,103.90 × 78,027.59
  4. Step 4: Simplify right side
    124,041.29x = 13,350,824,566.46
  5. Step 5: Solve for x
    x = 13,350,824,566.46/124,041.29
  6. Step 6: Final answer
    x = 107,632.10

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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.