Home / 127,721.46-191,611.98-38,974.80

Finding the Fourth Proportional to 127,721.46, 191,611.98 and 38,974.80

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Solution

The fourth proportional to 127,721.46, 191,611.98 and 38,974.80 is: 58,471.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,721.46 : 191,611.98 = 38,974.80 : x
  2. Step 2: Convert to fraction form
    127,721.46/191,611.98 = 38,974.80/x
  3. Step 3: Cross multiply
    127,721.46x = 191,611.98 × 38,974.80
  4. Step 4: Simplify right side
    127,721.46x = 7,468,038,598.10
  5. Step 5: Solve for x
    x = 7,468,038,598.10/127,721.46
  6. Step 6: Final answer
    x = 58,471.29

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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.