Home / 120,401.00-180,587.12-31,661.42

Finding the Fourth Proportional to 120,401.00, 180,587.12 and 31,661.42

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Solution

The fourth proportional to 120,401.00, 180,587.12 and 31,661.42 is: 47,488.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,401.00 : 180,587.12 = 31,661.42 : x
  2. Step 2: Convert to fraction form
    120,401.00/180,587.12 = 31,661.42/x
  3. Step 3: Cross multiply
    120,401.00x = 180,587.12 × 31,661.42
  4. Step 4: Simplify right side
    120,401.00x = 5,717,643,769.76
  5. Step 5: Solve for x
    x = 5,717,643,769.76/120,401.00
  6. Step 6: Final answer
    x = 47,488.34

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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.