Home / 98,107.32-135,429.21-66,319.29

Finding the Fourth Proportional to 98,107.32, 135,429.21 and 66,319.29

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Solution

The fourth proportional to 98,107.32, 135,429.21 and 66,319.29 is: 91,548.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,107.32 : 135,429.21 = 66,319.29 : x
  2. Step 2: Convert to fraction form
    98,107.32/135,429.21 = 66,319.29/x
  3. Step 3: Cross multiply
    98,107.32x = 135,429.21 × 66,319.29
  4. Step 4: Simplify right side
    98,107.32x = 8,981,569,052.46
  5. Step 5: Solve for x
    x = 8,981,569,052.46/98,107.32
  6. Step 6: Final answer
    x = 91,548.41

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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.