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Finding the Fourth Proportional to 125,901.40, 188,852.10 and 69,914.20

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Solution

The fourth proportional to 125,901.40, 188,852.10 and 69,914.20 is: 104,871.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,901.40 : 188,852.10 = 69,914.20 : x
  2. Step 2: Convert to fraction form
    125,901.40/188,852.10 = 69,914.20/x
  3. Step 3: Cross multiply
    125,901.40x = 188,852.10 × 69,914.20
  4. Step 4: Simplify right side
    125,901.40x = 13,203,443,489.82
  5. Step 5: Solve for x
    x = 13,203,443,489.82/125,901.40
  6. Step 6: Final answer
    x = 104,871.30

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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.