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Finding the Fourth Proportional to 125,445.68, 188,270.28 and 66,317.84

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Solution

The fourth proportional to 125,445.68, 188,270.28 and 66,317.84 is: 99,530.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,445.68 : 188,270.28 = 66,317.84 : x
  2. Step 2: Convert to fraction form
    125,445.68/188,270.28 = 66,317.84/x
  3. Step 3: Cross multiply
    125,445.68x = 188,270.28 × 66,317.84
  4. Step 4: Simplify right side
    125,445.68x = 12,485,678,305.80
  5. Step 5: Solve for x
    x = 12,485,678,305.80/125,445.68
  6. Step 6: Final answer
    x = 99,530.56

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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.