Home / 142,513.80-196,632.14-85,129.64

Finding the Fourth Proportional to 142,513.80, 196,632.14 and 85,129.64

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Solution

The fourth proportional to 142,513.80, 196,632.14 and 85,129.64 is: 117,456.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,513.80 : 196,632.14 = 85,129.64 : x
  2. Step 2: Convert to fraction form
    142,513.80/196,632.14 = 85,129.64/x
  3. Step 3: Cross multiply
    142,513.80x = 196,632.14 × 85,129.64
  4. Step 4: Simplify right side
    142,513.80x = 16,739,221,881.82
  5. Step 5: Solve for x
    x = 16,739,221,881.82/142,513.80
  6. Step 6: Final answer
    x = 117,456.85

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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.