Home / 142,581.04-196,741.24-78,918.68

Finding the Fourth Proportional to 142,581.04, 196,741.24 and 78,918.68

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Solution

The fourth proportional to 142,581.04, 196,741.24 and 78,918.68 is: 108,896.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,581.04 : 196,741.24 = 78,918.68 : x
  2. Step 2: Convert to fraction form
    142,581.04/196,741.24 = 78,918.68/x
  3. Step 3: Cross multiply
    142,581.04x = 196,741.24 × 78,918.68
  4. Step 4: Simplify right side
    142,581.04x = 15,526,559,256.92
  5. Step 5: Solve for x
    x = 15,526,559,256.92/142,581.04
  6. Step 6: Final answer
    x = 108,896.38

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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.