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Finding the Fourth Proportional to 125,938.60, 188,907.90 and 88,540.90

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Solution

The fourth proportional to 125,938.60, 188,907.90 and 88,540.90 is: 132,811.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,938.60 : 188,907.90 = 88,540.90 : x
  2. Step 2: Convert to fraction form
    125,938.60/188,907.90 = 88,540.90/x
  3. Step 3: Cross multiply
    125,938.60x = 188,907.90 × 88,540.90
  4. Step 4: Simplify right side
    125,938.60x = 16,726,075,483.11
  5. Step 5: Solve for x
    x = 16,726,075,483.11/125,938.60
  6. Step 6: Final answer
    x = 132,811.35

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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.