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Finding the Fourth Proportional to 109,915.60, 164,928.08 and 43,357.90

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Solution

The fourth proportional to 109,915.60, 164,928.08 and 43,357.90 is: 65,058.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,915.60 : 164,928.08 = 43,357.90 : x
  2. Step 2: Convert to fraction form
    109,915.60/164,928.08 = 43,357.90/x
  3. Step 3: Cross multiply
    109,915.60x = 164,928.08 × 43,357.90
  4. Step 4: Simplify right side
    109,915.60x = 7,150,935,199.83
  5. Step 5: Solve for x
    x = 7,150,935,199.83/109,915.60
  6. Step 6: Final answer
    x = 65,058.42

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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.