Home / 131,809.28-197,688-43,065.92

Finding the Fourth Proportional to 131,809.28, 197,688 and 43,065.92

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Solution

The fourth proportional to 131,809.28, 197,688 and 43,065.92 is: 64,590.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,809.28 : 197,688 = 43,065.92 : x
  2. Step 2: Convert to fraction form
    131,809.28/197,688 = 43,065.92/x
  3. Step 3: Cross multiply
    131,809.28x = 197,688 × 43,065.92
  4. Step 4: Simplify right side
    131,809.28x = 8,513,615,592.96
  5. Step 5: Solve for x
    x = 8,513,615,592.96/131,809.28
  6. Step 6: Final answer
    x = 64,590.41

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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.