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Finding the Fourth Proportional to 151,756.96, 209,436.20 and 83,787.04

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Solution

The fourth proportional to 151,756.96, 209,436.20 and 83,787.04 is: 115,632.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,756.96 : 209,436.20 = 83,787.04 : x
  2. Step 2: Convert to fraction form
    151,756.96/209,436.20 = 83,787.04/x
  3. Step 3: Cross multiply
    151,756.96x = 209,436.20 × 83,787.04
  4. Step 4: Simplify right side
    151,756.96x = 17,548,039,266.85
  5. Step 5: Solve for x
    x = 17,548,039,266.85/151,756.96
  6. Step 6: Final answer
    x = 115,632.52

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1.5x scale

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.