Home / 142,368.75-196,451.82-78,697.89

Finding the Fourth Proportional to 142,368.75, 196,451.82 and 78,697.89

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Solution

The fourth proportional to 142,368.75, 196,451.82 and 78,697.89 is: 108,593.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,368.75 : 196,451.82 = 78,697.89 : x
  2. Step 2: Convert to fraction form
    142,368.75/196,451.82 = 78,697.89/x
  3. Step 3: Cross multiply
    142,368.75x = 196,451.82 × 78,697.89
  4. Step 4: Simplify right side
    142,368.75x = 15,460,343,720.66
  5. Step 5: Solve for x
    x = 15,460,343,720.66/142,368.75
  6. Step 6: Final answer
    x = 108,593.66

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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.