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Finding the Fourth Proportional to 134,604.50, 185,754.21 and 78,048.68

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Solution

The fourth proportional to 134,604.50, 185,754.21 and 78,048.68 is: 107,707.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,604.50 : 185,754.21 = 78,048.68 : x
  2. Step 2: Convert to fraction form
    134,604.50/185,754.21 = 78,048.68/x
  3. Step 3: Cross multiply
    134,604.50x = 185,754.21 × 78,048.68
  4. Step 4: Simplify right side
    134,604.50x = 14,497,870,894.94
  5. Step 5: Solve for x
    x = 14,497,870,894.94/134,604.50
  6. Step 6: Final answer
    x = 107,707.18

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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.