Home / 105,256.38-145,252.11-57,508.71

Finding the Fourth Proportional to 105,256.38, 145,252.11 and 57,508.71

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Solution

The fourth proportional to 105,256.38, 145,252.11 and 57,508.71 is: 79,361.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,256.38 : 145,252.11 = 57,508.71 : x
  2. Step 2: Convert to fraction form
    105,256.38/145,252.11 = 57,508.71/x
  3. Step 3: Cross multiply
    105,256.38x = 145,252.11 × 57,508.71
  4. Step 4: Simplify right side
    105,256.38x = 8,353,261,470.88
  5. Step 5: Solve for x
    x = 8,353,261,470.88/105,256.38
  6. Step 6: Final answer
    x = 79,361.09

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1.5x scale

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.