Home / 105,680.76-145,839.58-57,935.84

Finding the Fourth Proportional to 105,680.76, 145,839.58 and 57,935.84

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Solution

The fourth proportional to 105,680.76, 145,839.58 and 57,935.84 is: 79,951.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,680.76 : 145,839.58 = 57,935.84 : x
  2. Step 2: Convert to fraction form
    105,680.76/145,839.58 = 57,935.84/x
  3. Step 3: Cross multiply
    105,680.76x = 145,839.58 × 57,935.84
  4. Step 4: Simplify right side
    105,680.76x = 8,449,338,572.55
  5. Step 5: Solve for x
    x = 8,449,338,572.55/105,680.76
  6. Step 6: Final answer
    x = 79,951.53

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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.