Home / 142,740.80-196,994.40-79,098.56

Finding the Fourth Proportional to 142,740.80, 196,994.40 and 79,098.56

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Solution

The fourth proportional to 142,740.80, 196,994.40 and 79,098.56 is: 109,162.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,740.80 : 196,994.40 = 79,098.56 : x
  2. Step 2: Convert to fraction form
    142,740.80/196,994.40 = 79,098.56/x
  3. Step 3: Cross multiply
    142,740.80x = 196,994.40 × 79,098.56
  4. Step 4: Simplify right side
    142,740.80x = 15,581,973,368.06
  5. Step 5: Solve for x
    x = 15,581,973,368.06/142,740.80
  6. Step 6: Final answer
    x = 109,162.72

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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.