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Finding the Fourth Proportional to 129,008.80, 193,075.80 and 113,262.40

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Solution

The fourth proportional to 129,008.80, 193,075.80 and 113,262.40 is: 169,509.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,008.80 : 193,075.80 = 113,262.40 : x
  2. Step 2: Convert to fraction form
    129,008.80/193,075.80 = 113,262.40/x
  3. Step 3: Cross multiply
    129,008.80x = 193,075.80 × 113,262.40
  4. Step 4: Simplify right side
    129,008.80x = 21,868,228,489.92
  5. Step 5: Solve for x
    x = 21,868,228,489.92/129,008.80
  6. Step 6: Final answer
    x = 169,509.59

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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.