Home / 140,677.52-194,139.88-77,015.78

Finding the Fourth Proportional to 140,677.52, 194,139.88 and 77,015.78

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Solution

The fourth proportional to 140,677.52, 194,139.88 and 77,015.78 is: 106,284.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,677.52 : 194,139.88 = 77,015.78 : x
  2. Step 2: Convert to fraction form
    140,677.52/194,139.88 = 77,015.78/x
  3. Step 3: Cross multiply
    140,677.52x = 194,139.88 × 77,015.78
  4. Step 4: Simplify right side
    140,677.52x = 14,951,833,124.07
  5. Step 5: Solve for x
    x = 14,951,833,124.07/140,677.52
  6. Step 6: Final answer
    x = 106,284.45

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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.