Home / 142,486.08-196,720.24-91,519.36

Finding the Fourth Proportional to 142,486.08, 196,720.24 and 91,519.36

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Solution

The fourth proportional to 142,486.08, 196,720.24 and 91,519.36 is: 126,354.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,486.08 : 196,720.24 = 91,519.36 : x
  2. Step 2: Convert to fraction form
    142,486.08/196,720.24 = 91,519.36/x
  3. Step 3: Cross multiply
    142,486.08x = 196,720.24 × 91,519.36
  4. Step 4: Simplify right side
    142,486.08x = 18,003,710,463.85
  5. Step 5: Solve for x
    x = 18,003,710,463.85/142,486.08
  6. Step 6: Final answer
    x = 126,354.17

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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.