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Finding the Fourth Proportional to 124,708.80, 187,063.20 and 111,489.60

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Solution

The fourth proportional to 124,708.80, 187,063.20 and 111,489.60 is: 167,234.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,708.80 : 187,063.20 = 111,489.60 : x
  2. Step 2: Convert to fraction form
    124,708.80/187,063.20 = 111,489.60/x
  3. Step 3: Cross multiply
    124,708.80x = 187,063.20 × 111,489.60
  4. Step 4: Simplify right side
    124,708.80x = 20,855,601,342.72
  5. Step 5: Solve for x
    x = 20,855,601,342.72/124,708.80
  6. Step 6: Final answer
    x = 167,234.40

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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.