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Finding the Fourth Proportional to 107,527.20, 161,323.20 and 76,423.20

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Solution

The fourth proportional to 107,527.20, 161,323.20 and 76,423.20 is: 114,657.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,527.20 : 161,323.20 = 76,423.20 : x
  2. Step 2: Convert to fraction form
    107,527.20/161,323.20 = 76,423.20/x
  3. Step 3: Cross multiply
    107,527.20x = 161,323.20 × 76,423.20
  4. Step 4: Simplify right side
    107,527.20x = 12,328,835,178.24
  5. Step 5: Solve for x
    x = 12,328,835,178.24/107,527.20
  6. Step 6: Final answer
    x = 114,657.83

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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.