Home / 98,168.22-135,457.39-55,139.47

Finding the Fourth Proportional to 98,168.22, 135,457.39 and 55,139.47

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Solution

The fourth proportional to 98,168.22, 135,457.39 and 55,139.47 is: 76,084.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,168.22 : 135,457.39 = 55,139.47 : x
  2. Step 2: Convert to fraction form
    98,168.22/135,457.39 = 55,139.47/x
  3. Step 3: Cross multiply
    98,168.22x = 135,457.39 × 55,139.47
  4. Step 4: Simplify right side
    98,168.22x = 7,469,048,838.85
  5. Step 5: Solve for x
    x = 7,469,048,838.85/98,168.22
  6. Step 6: Final answer
    x = 76,084.18

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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.