Home / 142,166.13-196,186.91-78,502.29

Finding the Fourth Proportional to 142,166.13, 196,186.91 and 78,502.29

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Solution

The fourth proportional to 142,166.13, 196,186.91 and 78,502.29 is: 108,331.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,166.13 : 196,186.91 = 78,502.29 : x
  2. Step 2: Convert to fraction form
    142,166.13/196,186.91 = 78,502.29/x
  3. Step 3: Cross multiply
    142,166.13x = 196,186.91 × 78,502.29
  4. Step 4: Simplify right side
    142,166.13x = 15,401,121,310.51
  5. Step 5: Solve for x
    x = 15,401,121,310.51/142,166.13
  6. Step 6: Final answer
    x = 108,331.86

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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.