Home / 107,438.94-148,311.20-72,521.16

Finding the Fourth Proportional to 107,438.94, 148,311.20 and 72,521.16

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Solution

The fourth proportional to 107,438.94, 148,311.20 and 72,521.16 is: 100,109.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,438.94 : 148,311.20 = 72,521.16 : x
  2. Step 2: Convert to fraction form
    107,438.94/148,311.20 = 72,521.16/x
  3. Step 3: Cross multiply
    107,438.94x = 148,311.20 × 72,521.16
  4. Step 4: Simplify right side
    107,438.94x = 10,755,699,902.39
  5. Step 5: Solve for x
    x = 10,755,699,902.39/107,438.94
  6. Step 6: Final answer
    x = 100,109.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.