Home / 295,126.18-442,639.75-81,915.76

Finding the Fourth Proportional to 295,126.18, 442,639.75 and 81,915.76

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Solution

The fourth proportional to 295,126.18, 442,639.75 and 81,915.76 is: 122,859.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,126.18 : 442,639.75 = 81,915.76 : x
  2. Step 2: Convert to fraction form
    295,126.18/442,639.75 = 81,915.76/x
  3. Step 3: Cross multiply
    295,126.18x = 442,639.75 × 81,915.76
  4. Step 4: Simplify right side
    295,126.18x = 36,259,171,527.46
  5. Step 5: Solve for x
    x = 36,259,171,527.46/295,126.18
  6. Step 6: Final answer
    x = 122,859.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.