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Finding the Fourth Proportional to 98,008.80, 146,624.40 and 85,005.60

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Solution

The fourth proportional to 98,008.80, 146,624.40 and 85,005.60 is: 127,171.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,008.80 : 146,624.40 = 85,005.60 : x
  2. Step 2: Convert to fraction form
    98,008.80/146,624.40 = 85,005.60/x
  3. Step 3: Cross multiply
    98,008.80x = 146,624.40 × 85,005.60
  4. Step 4: Simplify right side
    98,008.80x = 12,463,895,096.64
  5. Step 5: Solve for x
    x = 12,463,895,096.64/98,008.80
  6. Step 6: Final answer
    x = 127,171.18

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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.