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Finding the Fourth Proportional to 181,915.80, 272,873.70 and 82,123.80

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Solution

The fourth proportional to 181,915.80, 272,873.70 and 82,123.80 is: 123,185.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,915.80 : 272,873.70 = 82,123.80 : x
  2. Step 2: Convert to fraction form
    181,915.80/272,873.70 = 82,123.80/x
  3. Step 3: Cross multiply
    181,915.80x = 272,873.70 × 82,123.80
  4. Step 4: Simplify right side
    181,915.80x = 22,409,425,164.06
  5. Step 5: Solve for x
    x = 22,409,425,164.06/181,915.80
  6. Step 6: Final answer
    x = 123,185.70

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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.