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Finding the Fourth Proportional to 131,123.80, 180,948.90 and 73,758.79

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Solution

The fourth proportional to 131,123.80, 180,948.90 and 73,758.79 is: 101,786.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,123.80 : 180,948.90 = 73,758.79 : x
  2. Step 2: Convert to fraction form
    131,123.80/180,948.90 = 73,758.79/x
  3. Step 3: Cross multiply
    131,123.80x = 180,948.90 × 73,758.79
  4. Step 4: Simplify right side
    131,123.80x = 13,346,571,915.83
  5. Step 5: Solve for x
    x = 13,346,571,915.83/131,123.80
  6. Step 6: Final answer
    x = 101,786.04

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1.5x scale

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.