Home / 231,152.50-318,990.45-125,168.50

Finding the Fourth Proportional to 231,152.50, 318,990.45 and 125,168.50

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Solution

The fourth proportional to 231,152.50, 318,990.45 and 125,168.50 is: 172,732.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,152.50 : 318,990.45 = 125,168.50 : x
  2. Step 2: Convert to fraction form
    231,152.50/318,990.45 = 125,168.50/x
  3. Step 3: Cross multiply
    231,152.50x = 318,990.45 × 125,168.50
  4. Step 4: Simplify right side
    231,152.50x = 39,927,556,140.83
  5. Step 5: Solve for x
    x = 39,927,556,140.83/231,152.50
  6. Step 6: Final answer
    x = 172,732.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.