Home / 104,156.64-143,711.28-61,707.78

Finding the Fourth Proportional to 104,156.64, 143,711.28 and 61,707.78

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Solution

The fourth proportional to 104,156.64, 143,711.28 and 61,707.78 is: 85,141.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,156.64 : 143,711.28 = 61,707.78 : x
  2. Step 2: Convert to fraction form
    104,156.64/143,711.28 = 61,707.78/x
  3. Step 3: Cross multiply
    104,156.64x = 143,711.28 × 61,707.78
  4. Step 4: Simplify right side
    104,156.64x = 8,868,104,049.76
  5. Step 5: Solve for x
    x = 8,868,104,049.76/104,156.64
  6. Step 6: Final answer
    x = 85,141.99

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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.