Home / 142,635.15-196,822.80-85,263.03

Finding the Fourth Proportional to 142,635.15, 196,822.80 and 85,263.03

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Solution

The fourth proportional to 142,635.15, 196,822.80 and 85,263.03 is: 117,654.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,635.15 : 196,822.80 = 85,263.03 : x
  2. Step 2: Convert to fraction form
    142,635.15/196,822.80 = 85,263.03/x
  3. Step 3: Cross multiply
    142,635.15x = 196,822.80 × 85,263.03
  4. Step 4: Simplify right side
    142,635.15x = 16,781,708,301.08
  5. Step 5: Solve for x
    x = 16,781,708,301.08/142,635.15
  6. Step 6: Final answer
    x = 117,654.79

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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.