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Finding the Fourth Proportional to 100,123.50, 150,068.61 and 55,729.02

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Solution

The fourth proportional to 100,123.50, 150,068.61 and 55,729.02 is: 83,528.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,123.50 : 150,068.61 = 55,729.02 : x
  2. Step 2: Convert to fraction form
    100,123.50/150,068.61 = 55,729.02/x
  3. Step 3: Cross multiply
    100,123.50x = 150,068.61 × 55,729.02
  4. Step 4: Simplify right side
    100,123.50x = 8,363,176,568.06
  5. Step 5: Solve for x
    x = 8,363,176,568.06/100,123.50
  6. Step 6: Final answer
    x = 83,528.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.