Home / 120,700.23-181,039.71-54,122.49

Finding the Fourth Proportional to 120,700.23, 181,039.71 and 54,122.49

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Solution

The fourth proportional to 120,700.23, 181,039.71 and 54,122.49 is: 81,178.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,700.23 : 181,039.71 = 54,122.49 : x
  2. Step 2: Convert to fraction form
    120,700.23/181,039.71 = 54,122.49/x
  3. Step 3: Cross multiply
    120,700.23x = 181,039.71 × 54,122.49
  4. Step 4: Simplify right side
    120,700.23x = 9,798,319,894.08
  5. Step 5: Solve for x
    x = 9,798,319,894.08/120,700.23
  6. Step 6: Final answer
    x = 81,178.97

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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.