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Finding the Fourth Proportional to 112,221, 154,868.22 and 61,923.24

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Solution

The fourth proportional to 112,221, 154,868.22 and 61,923.24 is: 85,455.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,221 : 154,868.22 = 61,923.24 : x
  2. Step 2: Convert to fraction form
    112,221/154,868.22 = 61,923.24/x
  3. Step 3: Cross multiply
    112,221x = 154,868.22 × 61,923.24
  4. Step 4: Simplify right side
    112,221x = 9,589,941,955.43
  5. Step 5: Solve for x
    x = 9,589,941,955.43/112,221
  6. Step 6: Final answer
    x = 85,455.86

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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.