Home / 130,856.28-196,243.11-42,090

Finding the Fourth Proportional to 130,856.28, 196,243.11 and 42,090

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Solution

The fourth proportional to 130,856.28, 196,243.11 and 42,090 is: 63,121.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,856.28 : 196,243.11 = 42,090 : x
  2. Step 2: Convert to fraction form
    130,856.28/196,243.11 = 42,090/x
  3. Step 3: Cross multiply
    130,856.28x = 196,243.11 × 42,090
  4. Step 4: Simplify right side
    130,856.28x = 8,259,872,499.90
  5. Step 5: Solve for x
    x = 8,259,872,499.90/130,856.28
  6. Step 6: Final answer
    x = 63,121.71

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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.