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Finding the Fourth Proportional to 125,507.70, 188,090.51 and 69,264

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Solution

The fourth proportional to 125,507.70, 188,090.51 and 69,264 is: 103,801.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,507.70 : 188,090.51 = 69,264 : x
  2. Step 2: Convert to fraction form
    125,507.70/188,090.51 = 69,264/x
  3. Step 3: Cross multiply
    125,507.70x = 188,090.51 × 69,264
  4. Step 4: Simplify right side
    125,507.70x = 13,027,900,738.32
  5. Step 5: Solve for x
    x = 13,027,900,738.32/125,507.70
  6. Step 6: Final answer
    x = 103,801.61

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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.