Home / 98,190.15-135,520.05-57,901.50

Finding the Fourth Proportional to 98,190.15, 135,520.05 and 57,901.50

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Solution

The fourth proportional to 98,190.15, 135,520.05 and 57,901.50 is: 79,914.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,190.15 : 135,520.05 = 57,901.50 : x
  2. Step 2: Convert to fraction form
    98,190.15/135,520.05 = 57,901.50/x
  3. Step 3: Cross multiply
    98,190.15x = 135,520.05 × 57,901.50
  4. Step 4: Simplify right side
    98,190.15x = 7,846,814,175.08
  5. Step 5: Solve for x
    x = 7,846,814,175.08/98,190.15
  6. Step 6: Final answer
    x = 79,914.47

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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.