Home / 143,666.88-198,278.40-87,071.04

Finding the Fourth Proportional to 143,666.88, 198,278.40 and 87,071.04

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Solution

The fourth proportional to 143,666.88, 198,278.40 and 87,071.04 is: 120,169.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,666.88 : 198,278.40 = 87,071.04 : x
  2. Step 2: Convert to fraction form
    143,666.88/198,278.40 = 87,071.04/x
  3. Step 3: Cross multiply
    143,666.88x = 198,278.40 × 87,071.04
  4. Step 4: Simplify right side
    143,666.88x = 17,264,306,497.54
  5. Step 5: Solve for x
    x = 17,264,306,497.54/143,666.88
  6. Step 6: Final answer
    x = 120,169.01

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.