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Finding the Fourth Proportional to 125,560.40, 188,340.60 and 112,875.80

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Solution

The fourth proportional to 125,560.40, 188,340.60 and 112,875.80 is: 169,313.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,560.40 : 188,340.60 = 112,875.80 : x
  2. Step 2: Convert to fraction form
    125,560.40/188,340.60 = 112,875.80/x
  3. Step 3: Cross multiply
    125,560.40x = 188,340.60 × 112,875.80
  4. Step 4: Simplify right side
    125,560.40x = 21,259,095,897.48
  5. Step 5: Solve for x
    x = 21,259,095,897.48/125,560.40
  6. Step 6: Final answer
    x = 169,313.70

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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.