Home / 120,386.72-180,549.30-49,359.44

Finding the Fourth Proportional to 120,386.72, 180,549.30 and 49,359.44

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Solution

The fourth proportional to 120,386.72, 180,549.30 and 49,359.44 is: 74,026.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,386.72 : 180,549.30 = 49,359.44 : x
  2. Step 2: Convert to fraction form
    120,386.72/180,549.30 = 49,359.44/x
  3. Step 3: Cross multiply
    120,386.72x = 180,549.30 × 49,359.44
  4. Step 4: Simplify right side
    120,386.72x = 8,911,812,340.39
  5. Step 5: Solve for x
    x = 8,911,812,340.39/120,386.72
  6. Step 6: Final answer
    x = 74,026.54

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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.