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Finding the Fourth Proportional to 125,795.47, 188,693.16 and 86,232.64

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Solution

The fourth proportional to 125,795.47, 188,693.16 and 86,232.64 is: 129,348.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,795.47 : 188,693.16 = 86,232.64 : x
  2. Step 2: Convert to fraction form
    125,795.47/188,693.16 = 86,232.64/x
  3. Step 3: Cross multiply
    125,795.47x = 188,693.16 × 86,232.64
  4. Step 4: Simplify right side
    125,795.47x = 16,271,508,393.28
  5. Step 5: Solve for x
    x = 16,271,508,393.28/125,795.47
  6. Step 6: Final answer
    x = 129,348.93

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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.