Home / 155,456.40-232,856.55-138,835.20

Finding the Fourth Proportional to 155,456.40, 232,856.55 and 138,835.20

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Solution

The fourth proportional to 155,456.40, 232,856.55 and 138,835.20 is: 207,959.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,456.40 : 232,856.55 = 138,835.20 : x
  2. Step 2: Convert to fraction form
    155,456.40/232,856.55 = 138,835.20/x
  3. Step 3: Cross multiply
    155,456.40x = 232,856.55 × 138,835.20
  4. Step 4: Simplify right side
    155,456.40x = 32,328,685,690.56
  5. Step 5: Solve for x
    x = 32,328,685,690.56/155,456.40
  6. Step 6: Final answer
    x = 207,959.82

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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.