Home / 278,454.12-417,681.18-68,089.56

Finding the Fourth Proportional to 278,454.12, 417,681.18 and 68,089.56

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Solution

The fourth proportional to 278,454.12, 417,681.18 and 68,089.56 is: 102,134.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,454.12 : 417,681.18 = 68,089.56 : x
  2. Step 2: Convert to fraction form
    278,454.12/417,681.18 = 68,089.56/x
  3. Step 3: Cross multiply
    278,454.12x = 417,681.18 × 68,089.56
  4. Step 4: Simplify right side
    278,454.12x = 28,439,727,766.48
  5. Step 5: Solve for x
    x = 28,439,727,766.48/278,454.12
  6. Step 6: Final answer
    x = 102,134.34

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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.