Home / 120,928.48-181,454.16-54,355.20

Finding the Fourth Proportional to 120,928.48, 181,454.16 and 54,355.20

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Solution

The fourth proportional to 120,928.48, 181,454.16 and 54,355.20 is: 81,560.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,928.48 : 181,454.16 = 54,355.20 : x
  2. Step 2: Convert to fraction form
    120,928.48/181,454.16 = 54,355.20/x
  3. Step 3: Cross multiply
    120,928.48x = 181,454.16 × 54,355.20
  4. Step 4: Simplify right side
    120,928.48x = 9,862,977,157.63
  5. Step 5: Solve for x
    x = 9,862,977,157.63/120,928.48
  6. Step 6: Final answer
    x = 81,560.42

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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.