Home / 278,655.18-417,998.56-89,132.18

Finding the Fourth Proportional to 278,655.18, 417,998.56 and 89,132.18

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Solution

The fourth proportional to 278,655.18, 417,998.56 and 89,132.18 is: 133,703.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,655.18 : 417,998.56 = 89,132.18 : x
  2. Step 2: Convert to fraction form
    278,655.18/417,998.56 = 89,132.18/x
  3. Step 3: Cross multiply
    278,655.18x = 417,998.56 × 89,132.18
  4. Step 4: Simplify right side
    278,655.18x = 37,257,122,889.66
  5. Step 5: Solve for x
    x = 37,257,122,889.66/278,655.18
  6. Step 6: Final answer
    x = 133,703.32

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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.