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Finding the Fourth Proportional to 115,386.80, 159,235.84 and 67,674.56

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Solution

The fourth proportional to 115,386.80, 159,235.84 and 67,674.56 is: 93,392.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,386.80 : 159,235.84 = 67,674.56 : x
  2. Step 2: Convert to fraction form
    115,386.80/159,235.84 = 67,674.56/x
  3. Step 3: Cross multiply
    115,386.80x = 159,235.84 × 67,674.56
  4. Step 4: Simplify right side
    115,386.80x = 10,776,215,408.23
  5. Step 5: Solve for x
    x = 10,776,215,408.23/115,386.80
  6. Step 6: Final answer
    x = 93,392.10

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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.