Home / 120,845.61-181,329.81-54,272.13

Finding the Fourth Proportional to 120,845.61, 181,329.81 and 54,272.13

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Solution

The fourth proportional to 120,845.61, 181,329.81 and 54,272.13 is: 81,435.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,845.61 : 181,329.81 = 54,272.13 : x
  2. Step 2: Convert to fraction form
    120,845.61/181,329.81 = 54,272.13/x
  3. Step 3: Cross multiply
    120,845.61x = 181,329.81 × 54,272.13
  4. Step 4: Simplify right side
    120,845.61x = 9,841,155,021.20
  5. Step 5: Solve for x
    x = 9,841,155,021.20/120,845.61
  6. Step 6: Final answer
    x = 81,435.77

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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.