Home / 129,281.10-193,921.65-40,541.76

Finding the Fourth Proportional to 129,281.10, 193,921.65 and 40,541.76

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Solution

The fourth proportional to 129,281.10, 193,921.65 and 40,541.76 is: 60,812.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,281.10 : 193,921.65 = 40,541.76 : x
  2. Step 2: Convert to fraction form
    129,281.10/193,921.65 = 40,541.76/x
  3. Step 3: Cross multiply
    129,281.10x = 193,921.65 × 40,541.76
  4. Step 4: Simplify right side
    129,281.10x = 7,861,924,993.10
  5. Step 5: Solve for x
    x = 7,861,924,993.10/129,281.10
  6. Step 6: Final answer
    x = 60,812.64

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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.