Home / 98,139.40-135,433.02-55,698.64

Finding the Fourth Proportional to 98,139.40, 135,433.02 and 55,698.64

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Solution

The fourth proportional to 98,139.40, 135,433.02 and 55,698.64 is: 76,864.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,139.40 : 135,433.02 = 55,698.64 : x
  2. Step 2: Convert to fraction form
    98,139.40/135,433.02 = 55,698.64/x
  3. Step 3: Cross multiply
    98,139.40x = 135,433.02 × 55,698.64
  4. Step 4: Simplify right side
    98,139.40x = 7,543,435,025.09
  5. Step 5: Solve for x
    x = 7,543,435,025.09/98,139.40
  6. Step 6: Final answer
    x = 76,864.49

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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.