Home / 142,587.88-196,794.20-81,354.06

Finding the Fourth Proportional to 142,587.88, 196,794.20 and 81,354.06

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Solution

The fourth proportional to 142,587.88, 196,794.20 and 81,354.06 is: 112,281.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,587.88 : 196,794.20 = 81,354.06 : x
  2. Step 2: Convert to fraction form
    142,587.88/196,794.20 = 81,354.06/x
  3. Step 3: Cross multiply
    142,587.88x = 196,794.20 × 81,354.06
  4. Step 4: Simplify right side
    142,587.88x = 16,010,007,357.84
  5. Step 5: Solve for x
    x = 16,010,007,357.84/142,587.88
  6. Step 6: Final answer
    x = 112,281.69

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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.