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Finding the Fourth Proportional to 147,087.68, 220,477.92 and 72,104

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Solution

The fourth proportional to 147,087.68, 220,477.92 and 72,104 is: 108,080.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,087.68 : 220,477.92 = 72,104 : x
  2. Step 2: Convert to fraction form
    147,087.68/220,477.92 = 72,104/x
  3. Step 3: Cross multiply
    147,087.68x = 220,477.92 × 72,104
  4. Step 4: Simplify right side
    147,087.68x = 15,897,339,943.68
  5. Step 5: Solve for x
    x = 15,897,339,943.68/147,087.68
  6. Step 6: Final answer
    x = 108,080.70

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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.