Home / 189,812.90-284,828.70-71,569.10

Finding the Fourth Proportional to 189,812.90, 284,828.70 and 71,569.10

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Solution

The fourth proportional to 189,812.90, 284,828.70 and 71,569.10 is: 107,394.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,812.90 : 284,828.70 = 71,569.10 : x
  2. Step 2: Convert to fraction form
    189,812.90/284,828.70 = 71,569.10/x
  3. Step 3: Cross multiply
    189,812.90x = 284,828.70 × 71,569.10
  4. Step 4: Simplify right side
    189,812.90x = 20,384,933,713.17
  5. Step 5: Solve for x
    x = 20,384,933,713.17/189,812.90
  6. Step 6: Final answer
    x = 107,394.88

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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.