Home / 120,947.20-181,334.40-54,332.80

Finding the Fourth Proportional to 120,947.20, 181,334.40 and 54,332.80

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Solution

The fourth proportional to 120,947.20, 181,334.40 and 54,332.80 is: 81,460.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,947.20 : 181,334.40 = 54,332.80 : x
  2. Step 2: Convert to fraction form
    120,947.20/181,334.40 = 54,332.80/x
  3. Step 3: Cross multiply
    120,947.20x = 181,334.40 × 54,332.80
  4. Step 4: Simplify right side
    120,947.20x = 9,852,405,688.32
  5. Step 5: Solve for x
    x = 9,852,405,688.32/120,947.20
  6. Step 6: Final answer
    x = 81,460.39

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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.