Home / 120,851.61-181,338.75-54,278.16

Finding the Fourth Proportional to 120,851.61, 181,338.75 and 54,278.16

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Solution

The fourth proportional to 120,851.61, 181,338.75 and 54,278.16 is: 81,444.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,851.61 : 181,338.75 = 54,278.16 : x
  2. Step 2: Convert to fraction form
    120,851.61/181,338.75 = 54,278.16/x
  3. Step 3: Cross multiply
    120,851.61x = 181,338.75 × 54,278.16
  4. Step 4: Simplify right side
    120,851.61x = 9,842,733,686.70
  5. Step 5: Solve for x
    x = 9,842,733,686.70/120,851.61
  6. Step 6: Final answer
    x = 81,444.79

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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.