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Finding the Fourth Proportional to 148,104, 204,387.84 and 81,040.32

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Solution

The fourth proportional to 148,104, 204,387.84 and 81,040.32 is: 111,838.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,104 : 204,387.84 = 81,040.32 : x
  2. Step 2: Convert to fraction form
    148,104/204,387.84 = 81,040.32/x
  3. Step 3: Cross multiply
    148,104x = 204,387.84 × 81,040.32
  4. Step 4: Simplify right side
    148,104x = 16,563,655,957.71
  5. Step 5: Solve for x
    x = 16,563,655,957.71/148,104
  6. Step 6: Final answer
    x = 111,838.01

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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.