Home / 120,921.56-181,401.12-61,725.20

Finding the Fourth Proportional to 120,921.56, 181,401.12 and 61,725.20

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Solution

The fourth proportional to 120,921.56, 181,401.12 and 61,725.20 is: 92,597.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,921.56 : 181,401.12 = 61,725.20 : x
  2. Step 2: Convert to fraction form
    120,921.56/181,401.12 = 61,725.20/x
  3. Step 3: Cross multiply
    120,921.56x = 181,401.12 × 61,725.20
  4. Step 4: Simplify right side
    120,921.56x = 11,197,020,412.22
  5. Step 5: Solve for x
    x = 11,197,020,412.22/120,921.56
  6. Step 6: Final answer
    x = 92,597.39

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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.