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Finding the Fourth Proportional to 132,590.70, 198,867.36 and 69,390.04

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Solution

The fourth proportional to 132,590.70, 198,867.36 and 69,390.04 is: 104,075.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,590.70 : 198,867.36 = 69,390.04 : x
  2. Step 2: Convert to fraction form
    132,590.70/198,867.36 = 69,390.04/x
  3. Step 3: Cross multiply
    132,590.70x = 198,867.36 × 69,390.04
  4. Step 4: Simplify right side
    132,590.70x = 13,799,414,065.09
  5. Step 5: Solve for x
    x = 13,799,414,065.09/132,590.70
  6. Step 6: Final answer
    x = 104,075.28

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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.