Home / 104,065.42-143,610.27-56,318.78

Finding the Fourth Proportional to 104,065.42, 143,610.27 and 56,318.78

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Solution

The fourth proportional to 104,065.42, 143,610.27 and 56,318.78 is: 77,719.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,065.42 : 143,610.27 = 56,318.78 : x
  2. Step 2: Convert to fraction form
    104,065.42/143,610.27 = 56,318.78/x
  3. Step 3: Cross multiply
    104,065.42x = 143,610.27 × 56,318.78
  4. Step 4: Simplify right side
    104,065.42x = 8,087,955,201.87
  5. Step 5: Solve for x
    x = 8,087,955,201.87/104,065.42
  6. Step 6: Final answer
    x = 77,719.91

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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.