Home / 109,712.13-151,402.85-61,965.57

Finding the Fourth Proportional to 109,712.13, 151,402.85 and 61,965.57

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Solution

The fourth proportional to 109,712.13, 151,402.85 and 61,965.57 is: 85,512.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,712.13 : 151,402.85 = 61,965.57 : x
  2. Step 2: Convert to fraction form
    109,712.13/151,402.85 = 61,965.57/x
  3. Step 3: Cross multiply
    109,712.13x = 151,402.85 × 61,965.57
  4. Step 4: Simplify right side
    109,712.13x = 9,381,763,590.05
  5. Step 5: Solve for x
    x = 9,381,763,590.05/109,712.13
  6. Step 6: Final answer
    x = 85,512.55

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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.