Home / 98,126.15-135,378.68-55,660.10

Finding the Fourth Proportional to 98,126.15, 135,378.68 and 55,660.10

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Solution

The fourth proportional to 98,126.15, 135,378.68 and 55,660.10 is: 76,790.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,126.15 : 135,378.68 = 55,660.10 : x
  2. Step 2: Convert to fraction form
    98,126.15/135,378.68 = 55,660.10/x
  3. Step 3: Cross multiply
    98,126.15x = 135,378.68 × 55,660.10
  4. Step 4: Simplify right side
    98,126.15x = 7,535,189,911.47
  5. Step 5: Solve for x
    x = 7,535,189,911.47/98,126.15
  6. Step 6: Final answer
    x = 76,790.85

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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.