Home / 124,973.76-172,464-68,385.12

Finding the Fourth Proportional to 124,973.76, 172,464 and 68,385.12

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Solution

The fourth proportional to 124,973.76, 172,464 and 68,385.12 is: 94,371.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,973.76 : 172,464 = 68,385.12 : x
  2. Step 2: Convert to fraction form
    124,973.76/172,464 = 68,385.12/x
  3. Step 3: Cross multiply
    124,973.76x = 172,464 × 68,385.12
  4. Step 4: Simplify right side
    124,973.76x = 11,793,971,335.68
  5. Step 5: Solve for x
    x = 11,793,971,335.68/124,973.76
  6. Step 6: Final answer
    x = 94,371.58

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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.