Home / 124,905.20-172,373.28-68,316.58

Finding the Fourth Proportional to 124,905.20, 172,373.28 and 68,316.58

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Solution

The fourth proportional to 124,905.20, 172,373.28 and 68,316.58 is: 94,279.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,905.20 : 172,373.28 = 68,316.58 : x
  2. Step 2: Convert to fraction form
    124,905.20/172,373.28 = 68,316.58/x
  3. Step 3: Cross multiply
    124,905.20x = 172,373.28 × 68,316.58
  4. Step 4: Simplify right side
    124,905.20x = 11,775,952,111.12
  5. Step 5: Solve for x
    x = 11,775,952,111.12/124,905.20
  6. Step 6: Final answer
    x = 94,279.12

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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.