Home / 122,971.20-169,650.98-75,141.52

Finding the Fourth Proportional to 122,971.20, 169,650.98 and 75,141.52

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Solution

The fourth proportional to 122,971.20, 169,650.98 and 75,141.52 is: 103,665.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,971.20 : 169,650.98 = 75,141.52 : x
  2. Step 2: Convert to fraction form
    122,971.20/169,650.98 = 75,141.52/x
  3. Step 3: Cross multiply
    122,971.20x = 169,650.98 × 75,141.52
  4. Step 4: Simplify right side
    122,971.20x = 12,747,832,506.69
  5. Step 5: Solve for x
    x = 12,747,832,506.69/122,971.20
  6. Step 6: Final answer
    x = 103,665.19

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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.