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Finding the Fourth Proportional to 77,120.58, 106,189.84 and 67,506.66

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Solution

The fourth proportional to 77,120.58, 106,189.84 and 67,506.66 is: 92,952.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,120.58 : 106,189.84 = 67,506.66 : x
  2. Step 2: Convert to fraction form
    77,120.58/106,189.84 = 67,506.66/x
  3. Step 3: Cross multiply
    77,120.58x = 106,189.84 × 67,506.66
  4. Step 4: Simplify right side
    77,120.58x = 7,168,521,424.33
  5. Step 5: Solve for x
    x = 7,168,521,424.33/77,120.58
  6. Step 6: Final answer
    x = 92,952.12

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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.