Home / 131,113.40-196,521.26-115,287.80

Finding the Fourth Proportional to 131,113.40, 196,521.26 and 115,287.80

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Solution

The fourth proportional to 131,113.40, 196,521.26 and 115,287.80 is: 172,800.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,113.40 : 196,521.26 = 115,287.80 : x
  2. Step 2: Convert to fraction form
    131,113.40/196,521.26 = 115,287.80/x
  3. Step 3: Cross multiply
    131,113.40x = 196,521.26 × 115,287.80
  4. Step 4: Simplify right side
    131,113.40x = 22,656,502,159.58
  5. Step 5: Solve for x
    x = 22,656,502,159.58/131,113.40
  6. Step 6: Final answer
    x = 172,800.82

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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.