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Finding the Fourth Proportional to 124,309.61, 171,542.69 and 75,992.47

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Solution

The fourth proportional to 124,309.61, 171,542.69 and 75,992.47 is: 104,866.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,309.61 : 171,542.69 = 75,992.47 : x
  2. Step 2: Convert to fraction form
    124,309.61/171,542.69 = 75,992.47/x
  3. Step 3: Cross multiply
    124,309.61x = 171,542.69 × 75,992.47
  4. Step 4: Simplify right side
    124,309.61x = 13,035,952,199.70
  5. Step 5: Solve for x
    x = 13,035,952,199.70/124,309.61
  6. Step 6: Final answer
    x = 104,866.81

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1.5x scale

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.