Home / 134,885.78-186,142.40-74,456.46

Finding the Fourth Proportional to 134,885.78, 186,142.40 and 74,456.46

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Solution

The fourth proportional to 134,885.78, 186,142.40 and 74,456.46 is: 102,749.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,885.78 : 186,142.40 = 74,456.46 : x
  2. Step 2: Convert to fraction form
    134,885.78/186,142.40 = 74,456.46/x
  3. Step 3: Cross multiply
    134,885.78x = 186,142.40 × 74,456.46
  4. Step 4: Simplify right side
    134,885.78x = 13,859,504,159.90
  5. Step 5: Solve for x
    x = 13,859,504,159.90/134,885.78
  6. Step 6: Final answer
    x = 102,749.93

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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.