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Finding the Fourth Proportional to 107,821.60, 161,732.40 and 98,490.40

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Solution

The fourth proportional to 107,821.60, 161,732.40 and 98,490.40 is: 147,735.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,821.60 : 161,732.40 = 98,490.40 : x
  2. Step 2: Convert to fraction form
    107,821.60/161,732.40 = 98,490.40/x
  3. Step 3: Cross multiply
    107,821.60x = 161,732.40 × 98,490.40
  4. Step 4: Simplify right side
    107,821.60x = 15,929,088,768.96
  5. Step 5: Solve for x
    x = 15,929,088,768.96/107,821.60
  6. Step 6: Final answer
    x = 147,735.60

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1.5x scale

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.