Home / 120,378.12-180,563.10-57,228.52

Finding the Fourth Proportional to 120,378.12, 180,563.10 and 57,228.52

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Solution

The fourth proportional to 120,378.12, 180,563.10 and 57,228.52 is: 85,840.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,378.12 : 180,563.10 = 57,228.52 : x
  2. Step 2: Convert to fraction form
    120,378.12/180,563.10 = 57,228.52/x
  3. Step 3: Cross multiply
    120,378.12x = 180,563.10 × 57,228.52
  4. Step 4: Simplify right side
    120,378.12x = 10,333,358,979.61
  5. Step 5: Solve for x
    x = 10,333,358,979.61/120,378.12
  6. Step 6: Final answer
    x = 85,840.84

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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.