Home / 115,787.80-173,681.70-108,789.40

Finding the Fourth Proportional to 115,787.80, 173,681.70 and 108,789.40

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Solution

The fourth proportional to 115,787.80, 173,681.70 and 108,789.40 is: 163,184.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,787.80 : 173,681.70 = 108,789.40 : x
  2. Step 2: Convert to fraction form
    115,787.80/173,681.70 = 108,789.40/x
  3. Step 3: Cross multiply
    115,787.80x = 173,681.70 × 108,789.40
  4. Step 4: Simplify right side
    115,787.80x = 18,894,727,933.98
  5. Step 5: Solve for x
    x = 18,894,727,933.98/115,787.80
  6. Step 6: Final answer
    x = 163,184.10

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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.