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Finding the Fourth Proportional to 104,901.87, 144,818.19 and 71,089.02

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Solution

The fourth proportional to 104,901.87, 144,818.19 and 71,089.02 is: 98,139.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,901.87 : 144,818.19 = 71,089.02 : x
  2. Step 2: Convert to fraction form
    104,901.87/144,818.19 = 71,089.02/x
  3. Step 3: Cross multiply
    104,901.87x = 144,818.19 × 71,089.02
  4. Step 4: Simplify right side
    104,901.87x = 10,294,983,205.27
  5. Step 5: Solve for x
    x = 10,294,983,205.27/104,901.87
  6. Step 6: Final answer
    x = 98,139.18

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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.