Home / 109,719.10-151,404.15-61,972.30

Finding the Fourth Proportional to 109,719.10, 151,404.15 and 61,972.30

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Solution

The fourth proportional to 109,719.10, 151,404.15 and 61,972.30 is: 85,517.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,719.10 : 151,404.15 = 61,972.30 : x
  2. Step 2: Convert to fraction form
    109,719.10/151,404.15 = 61,972.30/x
  3. Step 3: Cross multiply
    109,719.10x = 151,404.15 × 61,972.30
  4. Step 4: Simplify right side
    109,719.10x = 9,382,863,405.05
  5. Step 5: Solve for x
    x = 9,382,863,405.05/109,719.10
  6. Step 6: Final answer
    x = 85,517.14

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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.