Home / 122,262.18-168,663.71-81,445.28

Finding the Fourth Proportional to 122,262.18, 168,663.71 and 81,445.28

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Solution

The fourth proportional to 122,262.18, 168,663.71 and 81,445.28 is: 112,355.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,262.18 : 168,663.71 = 81,445.28 : x
  2. Step 2: Convert to fraction form
    122,262.18/168,663.71 = 81,445.28/x
  3. Step 3: Cross multiply
    122,262.18x = 168,663.71 × 81,445.28
  4. Step 4: Simplify right side
    122,262.18x = 13,736,862,257.90
  5. Step 5: Solve for x
    x = 13,736,862,257.90/122,262.18
  6. Step 6: Final answer
    x = 112,355.78

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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.