Home / 103,861.28-155,729.64-47,630.96

Finding the Fourth Proportional to 103,861.28, 155,729.64 and 47,630.96

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Solution

The fourth proportional to 103,861.28, 155,729.64 and 47,630.96 is: 71,417.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,861.28 : 155,729.64 = 47,630.96 : x
  2. Step 2: Convert to fraction form
    103,861.28/155,729.64 = 47,630.96/x
  3. Step 3: Cross multiply
    103,861.28x = 155,729.64 × 47,630.96
  4. Step 4: Simplify right side
    103,861.28x = 7,417,552,253.65
  5. Step 5: Solve for x
    x = 7,417,552,253.65/103,861.28
  6. Step 6: Final answer
    x = 71,417.88

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1.5x scale

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.