Home / 140,121.51-193,372.35-76,462.80

Finding the Fourth Proportional to 140,121.51, 193,372.35 and 76,462.80

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Solution

The fourth proportional to 140,121.51, 193,372.35 and 76,462.80 is: 105,521.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,121.51 : 193,372.35 = 76,462.80 : x
  2. Step 2: Convert to fraction form
    140,121.51/193,372.35 = 76,462.80/x
  3. Step 3: Cross multiply
    140,121.51x = 193,372.35 × 76,462.80
  4. Step 4: Simplify right side
    140,121.51x = 14,785,789,974.40
  5. Step 5: Solve for x
    x = 14,785,789,974.40/140,121.51
  6. Step 6: Final answer
    x = 105,521.20

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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.