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Finding the Fourth Proportional to 189,202.50, 261,101.49 and 103,160.79

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Solution

The fourth proportional to 189,202.50, 261,101.49 and 103,160.79 is: 142,363.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,202.50 : 261,101.49 = 103,160.79 : x
  2. Step 2: Convert to fraction form
    189,202.50/261,101.49 = 103,160.79/x
  3. Step 3: Cross multiply
    189,202.50x = 261,101.49 × 103,160.79
  4. Step 4: Simplify right side
    189,202.50x = 26,935,436,172.00
  5. Step 5: Solve for x
    x = 26,935,436,172.00/189,202.50
  6. Step 6: Final answer
    x = 142,363.00

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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.