Home / 112,102.56-154,706.76-66,770.28

Finding the Fourth Proportional to 112,102.56, 154,706.76 and 66,770.28

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Solution

The fourth proportional to 112,102.56, 154,706.76 and 66,770.28 is: 92,146.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,102.56 : 154,706.76 = 66,770.28 : x
  2. Step 2: Convert to fraction form
    112,102.56/154,706.76 = 66,770.28/x
  3. Step 3: Cross multiply
    112,102.56x = 154,706.76 × 66,770.28
  4. Step 4: Simplify right side
    112,102.56x = 10,329,813,683.09
  5. Step 5: Solve for x
    x = 10,329,813,683.09/112,102.56
  6. Step 6: Final answer
    x = 92,146.10

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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.