Home / 120,948.85-181,461.54-54,394.79

Finding the Fourth Proportional to 120,948.85, 181,461.54 and 54,394.79

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Solution

The fourth proportional to 120,948.85, 181,461.54 and 54,394.79 is: 81,609.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,948.85 : 181,461.54 = 54,394.79 : x
  2. Step 2: Convert to fraction form
    120,948.85/181,461.54 = 54,394.79/x
  3. Step 3: Cross multiply
    120,948.85x = 181,461.54 × 54,394.79
  4. Step 4: Simplify right side
    120,948.85x = 9,870,562,361.38
  5. Step 5: Solve for x
    x = 9,870,562,361.38/120,948.85
  6. Step 6: Final answer
    x = 81,609.40

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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.