Home / 189,736.90-284,605.35-71,434.78

Finding the Fourth Proportional to 189,736.90, 284,605.35 and 71,434.78

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Solution

The fourth proportional to 189,736.90, 284,605.35 and 71,434.78 is: 107,152.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,736.90 : 284,605.35 = 71,434.78 : x
  2. Step 2: Convert to fraction form
    189,736.90/284,605.35 = 71,434.78/x
  3. Step 3: Cross multiply
    189,736.90x = 284,605.35 × 71,434.78
  4. Step 4: Simplify right side
    189,736.90x = 20,330,720,564.07
  5. Step 5: Solve for x
    x = 20,330,720,564.07/189,736.90
  6. Step 6: Final answer
    x = 107,152.17

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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.