Home / 120,747.40-181,121.10-73,508.20

Finding the Fourth Proportional to 120,747.40, 181,121.10 and 73,508.20

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Solution

The fourth proportional to 120,747.40, 181,121.10 and 73,508.20 is: 110,262.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,747.40 : 181,121.10 = 73,508.20 : x
  2. Step 2: Convert to fraction form
    120,747.40/181,121.10 = 73,508.20/x
  3. Step 3: Cross multiply
    120,747.40x = 181,121.10 × 73,508.20
  4. Step 4: Simplify right side
    120,747.40x = 13,313,886,043.02
  5. Step 5: Solve for x
    x = 13,313,886,043.02/120,747.40
  6. Step 6: Final answer
    x = 110,262.30

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1.5x scale

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.