Home / 131,239.92-196,811.28-42,470.40

Finding the Fourth Proportional to 131,239.92, 196,811.28 and 42,470.40

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Solution

The fourth proportional to 131,239.92, 196,811.28 and 42,470.40 is: 63,689.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,239.92 : 196,811.28 = 42,470.40 : x
  2. Step 2: Convert to fraction form
    131,239.92/196,811.28 = 42,470.40/x
  3. Step 3: Cross multiply
    131,239.92x = 196,811.28 × 42,470.40
  4. Step 4: Simplify right side
    131,239.92x = 8,358,653,786.11
  5. Step 5: Solve for x
    x = 8,358,653,786.11/131,239.92
  6. Step 6: Final answer
    x = 63,689.87

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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.