Home / 98,144.13-135,440.72-55,705.39

Finding the Fourth Proportional to 98,144.13, 135,440.72 and 55,705.39

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Solution

The fourth proportional to 98,144.13, 135,440.72 and 55,705.39 is: 76,874.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,144.13 : 135,440.72 = 55,705.39 : x
  2. Step 2: Convert to fraction form
    98,144.13/135,440.72 = 55,705.39/x
  3. Step 3: Cross multiply
    98,144.13x = 135,440.72 × 55,705.39
  4. Step 4: Simplify right side
    98,144.13x = 7,544,778,129.48
  5. Step 5: Solve for x
    x = 7,544,778,129.48/98,144.13
  6. Step 6: Final answer
    x = 76,874.47

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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.