Home / 189,487.20-284,063.50-77,261.28

Finding the Fourth Proportional to 189,487.20, 284,063.50 and 77,261.28

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Solution

The fourth proportional to 189,487.20, 284,063.50 and 77,261.28 is: 115,823.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,487.20 : 284,063.50 = 77,261.28 : x
  2. Step 2: Convert to fraction form
    189,487.20/284,063.50 = 77,261.28/x
  3. Step 3: Cross multiply
    189,487.20x = 284,063.50 × 77,261.28
  4. Step 4: Simplify right side
    189,487.20x = 21,947,109,611.28
  5. Step 5: Solve for x
    x = 21,947,109,611.28/189,487.20
  6. Step 6: Final answer
    x = 115,823.71

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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.