Home / 104,287.29-143,812.83-78,507.57

Finding the Fourth Proportional to 104,287.29, 143,812.83 and 78,507.57

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Solution

The fourth proportional to 104,287.29, 143,812.83 and 78,507.57 is: 108,262.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,287.29 : 143,812.83 = 78,507.57 : x
  2. Step 2: Convert to fraction form
    104,287.29/143,812.83 = 78,507.57/x
  3. Step 3: Cross multiply
    104,287.29x = 143,812.83 × 78,507.57
  4. Step 4: Simplify right side
    104,287.29x = 11,290,395,818.12
  5. Step 5: Solve for x
    x = 11,290,395,818.12/104,287.29
  6. Step 6: Final answer
    x = 108,262.43

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1.5x scale

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.