Home / 86,720.10-129,950.55-73,500.90

Finding the Fourth Proportional to 86,720.10, 129,950.55 and 73,500.90

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Solution

The fourth proportional to 86,720.10, 129,950.55 and 73,500.90 is: 110,141.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,720.10 : 129,950.55 = 73,500.90 : x
  2. Step 2: Convert to fraction form
    86,720.10/129,950.55 = 73,500.90/x
  3. Step 3: Cross multiply
    86,720.10x = 129,950.55 × 73,500.90
  4. Step 4: Simplify right side
    86,720.10x = 9,551,482,380.50
  5. Step 5: Solve for x
    x = 9,551,482,380.50/86,720.10
  6. Step 6: Final answer
    x = 110,141.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.