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Finding the Fourth Proportional to 101,651.19, 140,302.07 and 67,661.02

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Solution

The fourth proportional to 101,651.19, 140,302.07 and 67,661.02 is: 93,387.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,651.19 : 140,302.07 = 67,661.02 : x
  2. Step 2: Convert to fraction form
    101,651.19/140,302.07 = 67,661.02/x
  3. Step 3: Cross multiply
    101,651.19x = 140,302.07 × 67,661.02
  4. Step 4: Simplify right side
    101,651.19x = 9,492,981,164.31
  5. Step 5: Solve for x
    x = 9,492,981,164.31/101,651.19
  6. Step 6: Final answer
    x = 93,387.80

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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.