Home / 124,999.11-172,319.13-89,126.91

Finding the Fourth Proportional to 124,999.11, 172,319.13 and 89,126.91

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Solution

The fourth proportional to 124,999.11, 172,319.13 and 89,126.91 is: 122,867.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,999.11 : 172,319.13 = 89,126.91 : x
  2. Step 2: Convert to fraction form
    124,999.11/172,319.13 = 89,126.91/x
  3. Step 3: Cross multiply
    124,999.11x = 172,319.13 × 89,126.91
  4. Step 4: Simplify right side
    124,999.11x = 15,358,271,590.79
  5. Step 5: Solve for x
    x = 15,358,271,590.79/124,999.11
  6. Step 6: Final answer
    x = 122,867.05

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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.