Home / 143,928.60-215,601.30-81,526.20

Finding the Fourth Proportional to 143,928.60, 215,601.30 and 81,526.20

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Solution

The fourth proportional to 143,928.60, 215,601.30 and 81,526.20 is: 122,124.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,928.60 : 215,601.30 = 81,526.20 : x
  2. Step 2: Convert to fraction form
    143,928.60/215,601.30 = 81,526.20/x
  3. Step 3: Cross multiply
    143,928.60x = 215,601.30 × 81,526.20
  4. Step 4: Simplify right side
    143,928.60x = 17,577,154,704.06
  5. Step 5: Solve for x
    x = 17,577,154,704.06/143,928.60
  6. Step 6: Final answer
    x = 122,124.13

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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.