Home / 98,112.20-135,395.10-55,670.62

Finding the Fourth Proportional to 98,112.20, 135,395.10 and 55,670.62

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Solution

The fourth proportional to 98,112.20, 135,395.10 and 55,670.62 is: 76,825.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,112.20 : 135,395.10 = 55,670.62 : x
  2. Step 2: Convert to fraction form
    98,112.20/135,395.10 = 55,670.62/x
  3. Step 3: Cross multiply
    98,112.20x = 135,395.10 × 55,670.62
  4. Step 4: Simplify right side
    98,112.20x = 7,537,529,161.96
  5. Step 5: Solve for x
    x = 7,537,529,161.96/98,112.20
  6. Step 6: Final answer
    x = 76,825.61

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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.