Home / 105,454.25-145,522.19-57,709.61

Finding the Fourth Proportional to 105,454.25, 145,522.19 and 57,709.61

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Solution

The fourth proportional to 105,454.25, 145,522.19 and 57,709.61 is: 79,636.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,454.25 : 145,522.19 = 57,709.61 : x
  2. Step 2: Convert to fraction form
    105,454.25/145,522.19 = 57,709.61/x
  3. Step 3: Cross multiply
    105,454.25x = 145,522.19 × 57,709.61
  4. Step 4: Simplify right side
    105,454.25x = 8,398,028,247.91
  5. Step 5: Solve for x
    x = 8,398,028,247.91/105,454.25
  6. Step 6: Final answer
    x = 79,636.70

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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.