Home / 125,789.50-188,628.90-66,611.36

Finding the Fourth Proportional to 125,789.50, 188,628.90 and 66,611.36

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Solution

The fourth proportional to 125,789.50, 188,628.90 and 66,611.36 is: 99,887.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,789.50 : 188,628.90 = 66,611.36 : x
  2. Step 2: Convert to fraction form
    125,789.50/188,628.90 = 66,611.36/x
  3. Step 3: Cross multiply
    125,789.50x = 188,628.90 × 66,611.36
  4. Step 4: Simplify right side
    125,789.50x = 12,564,827,564.30
  5. Step 5: Solve for x
    x = 12,564,827,564.30/125,789.50
  6. Step 6: Final answer
    x = 99,887.73

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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.