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Finding the Fourth Proportional to 113,493.60, 170,240.40 and 30,387.60

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Solution

The fourth proportional to 113,493.60, 170,240.40 and 30,387.60 is: 45,581.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,493.60 : 170,240.40 = 30,387.60 : x
  2. Step 2: Convert to fraction form
    113,493.60/170,240.40 = 30,387.60/x
  3. Step 3: Cross multiply
    113,493.60x = 170,240.40 × 30,387.60
  4. Step 4: Simplify right side
    113,493.60x = 5,173,197,179.04
  5. Step 5: Solve for x
    x = 5,173,197,179.04/113,493.60
  6. Step 6: Final answer
    x = 45,581.40

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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.