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Finding the Fourth Proportional to 98,118.68, 135,400.02 and 55,674.68

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Solution

The fourth proportional to 98,118.68, 135,400.02 and 55,674.68 is: 76,828.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,118.68 : 135,400.02 = 55,674.68 : x
  2. Step 2: Convert to fraction form
    98,118.68/135,400.02 = 55,674.68/x
  3. Step 3: Cross multiply
    98,118.68x = 135,400.02 × 55,674.68
  4. Step 4: Simplify right side
    98,118.68x = 7,538,352,785.49
  5. Step 5: Solve for x
    x = 7,538,352,785.49/98,118.68
  6. Step 6: Final answer
    x = 76,828.93

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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.