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Finding the Fourth Proportional to 125,750.84, 188,509.10 and 86,326.52

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Solution

The fourth proportional to 125,750.84, 188,509.10 and 86,326.52 is: 129,409.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,750.84 : 188,509.10 = 86,326.52 : x
  2. Step 2: Convert to fraction form
    125,750.84/188,509.10 = 86,326.52/x
  3. Step 3: Cross multiply
    125,750.84x = 188,509.10 × 86,326.52
  4. Step 4: Simplify right side
    125,750.84x = 16,273,334,591.33
  5. Step 5: Solve for x
    x = 16,273,334,591.33/125,750.84
  6. Step 6: Final answer
    x = 129,409.35

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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.