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Finding the Fourth Proportional to 109,083.80, 163,625.70 and 53,787.80

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Solution

The fourth proportional to 109,083.80, 163,625.70 and 53,787.80 is: 80,681.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,083.80 : 163,625.70 = 53,787.80 : x
  2. Step 2: Convert to fraction form
    109,083.80/163,625.70 = 53,787.80/x
  3. Step 3: Cross multiply
    109,083.80x = 163,625.70 × 53,787.80
  4. Step 4: Simplify right side
    109,083.80x = 8,801,066,426.46
  5. Step 5: Solve for x
    x = 8,801,066,426.46/109,083.80
  6. Step 6: Final answer
    x = 80,681.70

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1.5x scale

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.