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Finding the Fourth Proportional to 68,123.67, 102,155.72 and 34,368.92

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Solution

The fourth proportional to 68,123.67, 102,155.72 and 34,368.92 is: 51,538.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,123.67 : 102,155.72 = 34,368.92 : x
  2. Step 2: Convert to fraction form
    68,123.67/102,155.72 = 34,368.92/x
  3. Step 3: Cross multiply
    68,123.67x = 102,155.72 × 34,368.92
  4. Step 4: Simplify right side
    68,123.67x = 3,510,981,809.99
  5. Step 5: Solve for x
    x = 3,510,981,809.99/68,123.67
  6. Step 6: Final answer
    x = 51,538.35

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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.