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Finding the Fourth Proportional to 72,148.68, 108,223.14 and 25,390.68

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Solution

The fourth proportional to 72,148.68, 108,223.14 and 25,390.68 is: 38,086.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,148.68 : 108,223.14 = 25,390.68 : x
  2. Step 2: Convert to fraction form
    72,148.68/108,223.14 = 25,390.68/x
  3. Step 3: Cross multiply
    72,148.68x = 108,223.14 × 25,390.68
  4. Step 4: Simplify right side
    72,148.68x = 2,747,859,116.34
  5. Step 5: Solve for x
    x = 2,747,859,116.34/72,148.68
  6. Step 6: Final answer
    x = 38,086.06

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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.