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Finding the Fourth Proportional to 178,019.34, 266,933.22 and 71,349.78

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Solution

The fourth proportional to 178,019.34, 266,933.22 and 71,349.78 is: 106,986.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,019.34 : 266,933.22 = 71,349.78 : x
  2. Step 2: Convert to fraction form
    178,019.34/266,933.22 = 71,349.78/x
  3. Step 3: Cross multiply
    178,019.34x = 266,933.22 × 71,349.78
  4. Step 4: Simplify right side
    178,019.34x = 19,045,626,521.69
  5. Step 5: Solve for x
    x = 19,045,626,521.69/178,019.34
  6. Step 6: Final answer
    x = 106,986.28

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1.5x scale

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.