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Finding the Fourth Proportional to 103,052.80, 154,579.20 and 98,241.40

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Solution

The fourth proportional to 103,052.80, 154,579.20 and 98,241.40 is: 147,362.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,052.80 : 154,579.20 = 98,241.40 : x
  2. Step 2: Convert to fraction form
    103,052.80/154,579.20 = 98,241.40/x
  3. Step 3: Cross multiply
    103,052.80x = 154,579.20 × 98,241.40
  4. Step 4: Simplify right side
    103,052.80x = 15,186,077,018.88
  5. Step 5: Solve for x
    x = 15,186,077,018.88/103,052.80
  6. Step 6: Final answer
    x = 147,362.10

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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.