Home / 141,431.76-195,180.85-77,774.40

Finding the Fourth Proportional to 141,431.76, 195,180.85 and 77,774.40

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Solution

The fourth proportional to 141,431.76, 195,180.85 and 77,774.40 is: 107,331.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,431.76 : 195,180.85 = 77,774.40 : x
  2. Step 2: Convert to fraction form
    141,431.76/195,180.85 = 77,774.40/x
  3. Step 3: Cross multiply
    141,431.76x = 195,180.85 × 77,774.40
  4. Step 4: Simplify right side
    141,431.76x = 15,180,073,500.24
  5. Step 5: Solve for x
    x = 15,180,073,500.24/141,431.76
  6. Step 6: Final answer
    x = 107,331.43

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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.