Home / 140,123.40-193,373.10-76,463.88

Finding the Fourth Proportional to 140,123.40, 193,373.10 and 76,463.88

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Solution

The fourth proportional to 140,123.40, 193,373.10 and 76,463.88 is: 105,521.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,123.40 : 193,373.10 = 76,463.88 : x
  2. Step 2: Convert to fraction form
    140,123.40/193,373.10 = 76,463.88/x
  3. Step 3: Cross multiply
    140,123.40x = 193,373.10 × 76,463.88
  4. Step 4: Simplify right side
    140,123.40x = 14,786,057,513.63
  5. Step 5: Solve for x
    x = 14,786,057,513.63/140,123.40
  6. Step 6: Final answer
    x = 105,521.69

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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.