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Finding the Fourth Proportional to 109,392.60, 164,040.30 and 42,810.60

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Solution

The fourth proportional to 109,392.60, 164,040.30 and 42,810.60 is: 64,196.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,392.60 : 164,040.30 = 42,810.60 : x
  2. Step 2: Convert to fraction form
    109,392.60/164,040.30 = 42,810.60/x
  3. Step 3: Cross multiply
    109,392.60x = 164,040.30 × 42,810.60
  4. Step 4: Simplify right side
    109,392.60x = 7,022,663,667.18
  5. Step 5: Solve for x
    x = 7,022,663,667.18/109,392.60
  6. Step 6: Final answer
    x = 64,196.88

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1.5x scale

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.