Home / 278,125.56-417,246.42-91,122.36

Finding the Fourth Proportional to 278,125.56, 417,246.42 and 91,122.36

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Solution

The fourth proportional to 278,125.56, 417,246.42 and 91,122.36 is: 136,702.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,125.56 : 417,246.42 = 91,122.36 : x
  2. Step 2: Convert to fraction form
    278,125.56/417,246.42 = 91,122.36/x
  3. Step 3: Cross multiply
    278,125.56x = 417,246.42 × 91,122.36
  4. Step 4: Simplify right side
    278,125.56x = 38,020,478,491.95
  5. Step 5: Solve for x
    x = 38,020,478,491.95/278,125.56
  6. Step 6: Final answer
    x = 136,702.57

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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.