Home / 112,872.27-155,770.09-66,959.09

Finding the Fourth Proportional to 112,872.27, 155,770.09 and 66,959.09

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Solution

The fourth proportional to 112,872.27, 155,770.09 and 66,959.09 is: 92,407.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,872.27 : 155,770.09 = 66,959.09 : x
  2. Step 2: Convert to fraction form
    112,872.27/155,770.09 = 66,959.09/x
  3. Step 3: Cross multiply
    112,872.27x = 155,770.09 × 66,959.09
  4. Step 4: Simplify right side
    112,872.27x = 10,430,223,113.51
  5. Step 5: Solve for x
    x = 10,430,223,113.51/112,872.27
  6. Step 6: Final answer
    x = 92,407.32

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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.