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Finding the Fourth Proportional to 134,605.50, 185,755.59 and 78,049.68

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Solution

The fourth proportional to 134,605.50, 185,755.59 and 78,049.68 is: 107,708.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,605.50 : 185,755.59 = 78,049.68 : x
  2. Step 2: Convert to fraction form
    134,605.50/185,755.59 = 78,049.68/x
  3. Step 3: Cross multiply
    134,605.50x = 185,755.59 × 78,049.68
  4. Step 4: Simplify right side
    134,605.50x = 14,498,164,357.71
  5. Step 5: Solve for x
    x = 14,498,164,357.71/134,605.50
  6. Step 6: Final answer
    x = 107,708.56

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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.