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Finding the Fourth Proportional to 107,845.40, 161,768.10 and 98,168.60

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Solution

The fourth proportional to 107,845.40, 161,768.10 and 98,168.60 is: 147,252.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,845.40 : 161,768.10 = 98,168.60 : x
  2. Step 2: Convert to fraction form
    107,845.40/161,768.10 = 98,168.60/x
  3. Step 3: Cross multiply
    107,845.40x = 161,768.10 × 98,168.60
  4. Step 4: Simplify right side
    107,845.40x = 15,880,547,901.66
  5. Step 5: Solve for x
    x = 15,880,547,901.66/107,845.40
  6. Step 6: Final answer
    x = 147,252.90

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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.