Home / 120,819.24-181,129.08-53,303.16

Finding the Fourth Proportional to 120,819.24, 181,129.08 and 53,303.16

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Solution

The fourth proportional to 120,819.24, 181,129.08 and 53,303.16 is: 79,910.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,819.24 : 181,129.08 = 53,303.16 : x
  2. Step 2: Convert to fraction form
    120,819.24/181,129.08 = 53,303.16/x
  3. Step 3: Cross multiply
    120,819.24x = 181,129.08 × 53,303.16
  4. Step 4: Simplify right side
    120,819.24x = 9,654,752,331.89
  5. Step 5: Solve for x
    x = 9,654,752,331.89/120,819.24
  6. Step 6: Final answer
    x = 79,910.72

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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.