Home / 98,140.44-135,360.54-66,276.12

Finding the Fourth Proportional to 98,140.44, 135,360.54 and 66,276.12

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Solution

The fourth proportional to 98,140.44, 135,360.54 and 66,276.12 is: 91,411.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,140.44 : 135,360.54 = 66,276.12 : x
  2. Step 2: Convert to fraction form
    98,140.44/135,360.54 = 66,276.12/x
  3. Step 3: Cross multiply
    98,140.44x = 135,360.54 × 66,276.12
  4. Step 4: Simplify right side
    98,140.44x = 8,971,171,392.30
  5. Step 5: Solve for x
    x = 8,971,171,392.30/98,140.44
  6. Step 6: Final answer
    x = 91,411.57

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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.