Home / 205,074.30-307,611.45-125,931.90

Finding the Fourth Proportional to 205,074.30, 307,611.45 and 125,931.90

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Solution

The fourth proportional to 205,074.30, 307,611.45 and 125,931.90 is: 188,897.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,074.30 : 307,611.45 = 125,931.90 : x
  2. Step 2: Convert to fraction form
    205,074.30/307,611.45 = 125,931.90/x
  3. Step 3: Cross multiply
    205,074.30x = 307,611.45 × 125,931.90
  4. Step 4: Simplify right side
    205,074.30x = 38,738,094,360.26
  5. Step 5: Solve for x
    x = 38,738,094,360.26/205,074.30
  6. Step 6: Final answer
    x = 188,897.85

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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.