Home / 141,390.12-195,118.38-77,728.92

Finding the Fourth Proportional to 141,390.12, 195,118.38 and 77,728.92

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Solution

The fourth proportional to 141,390.12, 195,118.38 and 77,728.92 is: 107,265.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,390.12 : 195,118.38 = 77,728.92 : x
  2. Step 2: Convert to fraction form
    141,390.12/195,118.38 = 77,728.92/x
  3. Step 3: Cross multiply
    141,390.12x = 195,118.38 × 77,728.92
  4. Step 4: Simplify right side
    141,390.12x = 15,166,340,949.55
  5. Step 5: Solve for x
    x = 15,166,340,949.55/141,390.12
  6. Step 6: Final answer
    x = 107,265.92

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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.