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Finding the Fourth Proportional to 109,615.58, 151,267.92 and 61,217

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Solution

The fourth proportional to 109,615.58, 151,267.92 and 61,217 is: 84,478.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,615.58 : 151,267.92 = 61,217 : x
  2. Step 2: Convert to fraction form
    109,615.58/151,267.92 = 61,217/x
  3. Step 3: Cross multiply
    109,615.58x = 151,267.92 × 61,217
  4. Step 4: Simplify right side
    109,615.58x = 9,260,168,258.64
  5. Step 5: Solve for x
    x = 9,260,168,258.64/109,615.58
  6. Step 6: Final answer
    x = 84,478.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.