Home / 125,865.47-188,782-37,128.35

Finding the Fourth Proportional to 125,865.47, 188,782 and 37,128.35

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Solution

The fourth proportional to 125,865.47, 188,782 and 37,128.35 is: 55,687.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,865.47 : 188,782 = 37,128.35 : x
  2. Step 2: Convert to fraction form
    125,865.47/188,782 = 37,128.35/x
  3. Step 3: Cross multiply
    125,865.47x = 188,782 × 37,128.35
  4. Step 4: Simplify right side
    125,865.47x = 7,009,164,169.70
  5. Step 5: Solve for x
    x = 7,009,164,169.70/125,865.47
  6. Step 6: Final answer
    x = 55,687.74

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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.