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Finding the Fourth Proportional to 112,173.75, 154,810.71 and 61,872.75

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Solution

The fourth proportional to 112,173.75, 154,810.71 and 61,872.75 is: 85,390.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,173.75 : 154,810.71 = 61,872.75 : x
  2. Step 2: Convert to fraction form
    112,173.75/154,810.71 = 61,872.75/x
  3. Step 3: Cross multiply
    112,173.75x = 154,810.71 × 61,872.75
  4. Step 4: Simplify right side
    112,173.75x = 9,578,564,357.15
  5. Step 5: Solve for x
    x = 9,578,564,357.15/112,173.75
  6. Step 6: Final answer
    x = 85,390.43

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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.