Home / 134,885.75-186,142.35-74,456.42

Finding the Fourth Proportional to 134,885.75, 186,142.35 and 74,456.42

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Solution

The fourth proportional to 134,885.75, 186,142.35 and 74,456.42 is: 102,749.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,885.75 : 186,142.35 = 74,456.42 : x
  2. Step 2: Convert to fraction form
    134,885.75/186,142.35 = 74,456.42/x
  3. Step 3: Cross multiply
    134,885.75x = 186,142.35 × 74,456.42
  4. Step 4: Simplify right side
    134,885.75x = 13,859,492,060.68
  5. Step 5: Solve for x
    x = 13,859,492,060.68/134,885.75
  6. Step 6: Final answer
    x = 102,749.86

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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.