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Finding the Fourth Proportional to 89,107.80, 133,661.70 and 83,202.90

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Solution

The fourth proportional to 89,107.80, 133,661.70 and 83,202.90 is: 124,804.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,107.80 : 133,661.70 = 83,202.90 : x
  2. Step 2: Convert to fraction form
    89,107.80/133,661.70 = 83,202.90/x
  3. Step 3: Cross multiply
    89,107.80x = 133,661.70 × 83,202.90
  4. Step 4: Simplify right side
    89,107.80x = 11,121,041,058.93
  5. Step 5: Solve for x
    x = 11,121,041,058.93/89,107.80
  6. Step 6: Final answer
    x = 124,804.35

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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.