Home / 115,342.12-159,079.98-79,523.92

Finding the Fourth Proportional to 115,342.12, 159,079.98 and 79,523.92

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Solution

The fourth proportional to 115,342.12, 159,079.98 and 79,523.92 is: 109,679.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,342.12 : 159,079.98 = 79,523.92 : x
  2. Step 2: Convert to fraction form
    115,342.12/159,079.98 = 79,523.92/x
  3. Step 3: Cross multiply
    115,342.12x = 159,079.98 × 79,523.92
  4. Step 4: Simplify right side
    115,342.12x = 12,650,663,603.12
  5. Step 5: Solve for x
    x = 12,650,663,603.12/115,342.12
  6. Step 6: Final answer
    x = 109,679.48

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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.