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Finding the Fourth Proportional to 120,479.56, 180,829.46 and 61,356.04

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Solution

The fourth proportional to 120,479.56, 180,829.46 and 61,356.04 is: 92,090.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,479.56 : 180,829.46 = 61,356.04 : x
  2. Step 2: Convert to fraction form
    120,479.56/180,829.46 = 61,356.04/x
  3. Step 3: Cross multiply
    120,479.56x = 180,829.46 × 61,356.04
  4. Step 4: Simplify right side
    120,479.56x = 11,094,979,580.94
  5. Step 5: Solve for x
    x = 11,094,979,580.94/120,479.56
  6. Step 6: Final answer
    x = 92,090.14

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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.