Home / 109,514.12-151,129.28-61,767.32

Finding the Fourth Proportional to 109,514.12, 151,129.28 and 61,767.32

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Solution

The fourth proportional to 109,514.12, 151,129.28 and 61,767.32 is: 85,238.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,514.12 : 151,129.28 = 61,767.32 : x
  2. Step 2: Convert to fraction form
    109,514.12/151,129.28 = 61,767.32/x
  3. Step 3: Cross multiply
    109,514.12x = 151,129.28 × 61,767.32
  4. Step 4: Simplify right side
    109,514.12x = 9,334,850,599.13
  5. Step 5: Solve for x
    x = 9,334,850,599.13/109,514.12
  6. Step 6: Final answer
    x = 85,238.79

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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.