Home / 120,405.64-180,427.02-107,281.48

Finding the Fourth Proportional to 120,405.64, 180,427.02 and 107,281.48

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Solution

The fourth proportional to 120,405.64, 180,427.02 and 107,281.48 is: 160,760.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,405.64 : 180,427.02 = 107,281.48 : x
  2. Step 2: Convert to fraction form
    120,405.64/180,427.02 = 107,281.48/x
  3. Step 3: Cross multiply
    120,405.64x = 180,427.02 × 107,281.48
  4. Step 4: Simplify right side
    120,405.64x = 19,356,477,737.59
  5. Step 5: Solve for x
    x = 19,356,477,737.59/120,405.64
  6. Step 6: Final answer
    x = 160,760.56

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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.