Home / 125,129.86-172,679.28-68,542.18

Finding the Fourth Proportional to 125,129.86, 172,679.28 and 68,542.18

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Solution

The fourth proportional to 125,129.86, 172,679.28 and 68,542.18 is: 94,588.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,129.86 : 172,679.28 = 68,542.18 : x
  2. Step 2: Convert to fraction form
    125,129.86/172,679.28 = 68,542.18/x
  3. Step 3: Cross multiply
    125,129.86x = 172,679.28 × 68,542.18
  4. Step 4: Simplify right side
    125,129.86x = 11,835,814,292.03
  5. Step 5: Solve for x
    x = 11,835,814,292.03/125,129.86
  6. Step 6: Final answer
    x = 94,588.25

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1.5x scale

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.