Home / 189,380.16-261,343.11-103,337.20

Finding the Fourth Proportional to 189,380.16, 261,343.11 and 103,337.20

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Solution

The fourth proportional to 189,380.16, 261,343.11 and 103,337.20 is: 142,604.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,380.16 : 261,343.11 = 103,337.20 : x
  2. Step 2: Convert to fraction form
    189,380.16/261,343.11 = 103,337.20/x
  3. Step 3: Cross multiply
    189,380.16x = 261,343.11 × 103,337.20
  4. Step 4: Simplify right side
    189,380.16x = 27,006,465,359.61
  5. Step 5: Solve for x
    x = 27,006,465,359.61/189,380.16
  6. Step 6: Final answer
    x = 142,604.51

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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.