Home / 129,555.65-193,894.53-79,667.34

Finding the Fourth Proportional to 129,555.65, 193,894.53 and 79,667.34

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Solution

The fourth proportional to 129,555.65, 193,894.53 and 79,667.34 is: 119,231.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,555.65 : 193,894.53 = 79,667.34 : x
  2. Step 2: Convert to fraction form
    129,555.65/193,894.53 = 79,667.34/x
  3. Step 3: Cross multiply
    129,555.65x = 193,894.53 × 79,667.34
  4. Step 4: Simplify right side
    129,555.65x = 15,447,061,445.65
  5. Step 5: Solve for x
    x = 15,447,061,445.65/129,555.65
  6. Step 6: Final answer
    x = 119,231.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.