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Finding the Fourth Proportional to 75,158.40, 112,867.20 and 53,126.40

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Solution

The fourth proportional to 75,158.40, 112,867.20 and 53,126.40 is: 79,781.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,158.40 : 112,867.20 = 53,126.40 : x
  2. Step 2: Convert to fraction form
    75,158.40/112,867.20 = 53,126.40/x
  3. Step 3: Cross multiply
    75,158.40x = 112,867.20 × 53,126.40
  4. Step 4: Simplify right side
    75,158.40x = 5,996,228,014.08
  5. Step 5: Solve for x
    x = 5,996,228,014.08/75,158.40
  6. Step 6: Final answer
    x = 79,781.21

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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.