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Finding the Fourth Proportional to 98,388.30, 147,661.08 and 51,016.86

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Solution

The fourth proportional to 98,388.30, 147,661.08 and 51,016.86 is: 76,566.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,388.30 : 147,661.08 = 51,016.86 : x
  2. Step 2: Convert to fraction form
    98,388.30/147,661.08 = 51,016.86/x
  3. Step 3: Cross multiply
    98,388.30x = 147,661.08 × 51,016.86
  4. Step 4: Simplify right side
    98,388.30x = 7,533,204,645.81
  5. Step 5: Solve for x
    x = 7,533,204,645.81/98,388.30
  6. Step 6: Final answer
    x = 76,566.06

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.