Home / 140,780.29-194,276.79-77,118.07

Finding the Fourth Proportional to 140,780.29, 194,276.79 and 77,118.07

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Solution

The fourth proportional to 140,780.29, 194,276.79 and 77,118.07 is: 106,422.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,780.29 : 194,276.79 = 77,118.07 : x
  2. Step 2: Convert to fraction form
    140,780.29/194,276.79 = 77,118.07/x
  3. Step 3: Cross multiply
    140,780.29x = 194,276.79 × 77,118.07
  4. Step 4: Simplify right side
    140,780.29x = 14,982,251,090.60
  5. Step 5: Solve for x
    x = 14,982,251,090.60/140,780.29
  6. Step 6: Final answer
    x = 106,422.93

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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.