Home / 102,528.46-141,400.92-66,705.40

Finding the Fourth Proportional to 102,528.46, 141,400.92 and 66,705.40

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Solution

The fourth proportional to 102,528.46, 141,400.92 and 66,705.40 is: 91,995.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,528.46 : 141,400.92 = 66,705.40 : x
  2. Step 2: Convert to fraction form
    102,528.46/141,400.92 = 66,705.40/x
  3. Step 3: Cross multiply
    102,528.46x = 141,400.92 × 66,705.40
  4. Step 4: Simplify right side
    102,528.46x = 9,432,204,928.97
  5. Step 5: Solve for x
    x = 9,432,204,928.97/102,528.46
  6. Step 6: Final answer
    x = 91,995.97

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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.