Home / 142,052.22-196,065.62-81,657.90

Finding the Fourth Proportional to 142,052.22, 196,065.62 and 81,657.90

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Solution

The fourth proportional to 142,052.22, 196,065.62 and 81,657.90 is: 112,707.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,052.22 : 196,065.62 = 81,657.90 : x
  2. Step 2: Convert to fraction form
    142,052.22/196,065.62 = 81,657.90/x
  3. Step 3: Cross multiply
    142,052.22x = 196,065.62 × 81,657.90
  4. Step 4: Simplify right side
    142,052.22x = 16,010,306,791.40
  5. Step 5: Solve for x
    x = 16,010,306,791.40/142,052.22
  6. Step 6: Final answer
    x = 112,707.19

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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.