Home / 120,854.11-181,342.59-54,280.66

Finding the Fourth Proportional to 120,854.11, 181,342.59 and 54,280.66

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Solution

The fourth proportional to 120,854.11, 181,342.59 and 54,280.66 is: 81,448.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,854.11 : 181,342.59 = 54,280.66 : x
  2. Step 2: Convert to fraction form
    120,854.11/181,342.59 = 54,280.66/x
  3. Step 3: Cross multiply
    120,854.11x = 181,342.59 × 54,280.66
  4. Step 4: Simplify right side
    120,854.11x = 9,843,395,471.31
  5. Step 5: Solve for x
    x = 9,843,395,471.31/120,854.11
  6. Step 6: Final answer
    x = 81,448.58

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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.