Home / 142,770.65-197,020.55-79,107.89

Finding the Fourth Proportional to 142,770.65, 197,020.55 and 79,107.89

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Solution

The fourth proportional to 142,770.65, 197,020.55 and 79,107.89 is: 109,167.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,770.65 : 197,020.55 = 79,107.89 : x
  2. Step 2: Convert to fraction form
    142,770.65/197,020.55 = 79,107.89/x
  3. Step 3: Cross multiply
    142,770.65x = 197,020.55 × 79,107.89
  4. Step 4: Simplify right side
    142,770.65x = 15,585,879,209.81
  5. Step 5: Solve for x
    x = 15,585,879,209.81/142,770.65
  6. Step 6: Final answer
    x = 109,167.25

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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.