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Finding the Fourth Proportional to 163,988.40, 245,909.70 and 75,196.20

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Solution

The fourth proportional to 163,988.40, 245,909.70 and 75,196.20 is: 112,760.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,988.40 : 245,909.70 = 75,196.20 : x
  2. Step 2: Convert to fraction form
    163,988.40/245,909.70 = 75,196.20/x
  3. Step 3: Cross multiply
    163,988.40x = 245,909.70 × 75,196.20
  4. Step 4: Simplify right side
    163,988.40x = 18,491,474,983.14
  5. Step 5: Solve for x
    x = 18,491,474,983.14/163,988.40
  6. Step 6: Final answer
    x = 112,760.87

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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.