Home / 98,129.27-135,418.01-55,102.78

Finding the Fourth Proportional to 98,129.27, 135,418.01 and 55,102.78

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Solution

The fourth proportional to 98,129.27, 135,418.01 and 55,102.78 is: 76,041.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,129.27 : 135,418.01 = 55,102.78 : x
  2. Step 2: Convert to fraction form
    98,129.27/135,418.01 = 55,102.78/x
  3. Step 3: Cross multiply
    98,129.27x = 135,418.01 × 55,102.78
  4. Step 4: Simplify right side
    98,129.27x = 7,461,908,612.28
  5. Step 5: Solve for x
    x = 7,461,908,612.28/98,129.27
  6. Step 6: Final answer
    x = 76,041.62

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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.