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Finding the Fourth Proportional to 109,335.80, 164,003.70 and 39,189.80

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Solution

The fourth proportional to 109,335.80, 164,003.70 and 39,189.80 is: 58,784.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,335.80 : 164,003.70 = 39,189.80 : x
  2. Step 2: Convert to fraction form
    109,335.80/164,003.70 = 39,189.80/x
  3. Step 3: Cross multiply
    109,335.80x = 164,003.70 × 39,189.80
  4. Step 4: Simplify right side
    109,335.80x = 6,427,272,202.26
  5. Step 5: Solve for x
    x = 6,427,272,202.26/109,335.80
  6. Step 6: Final answer
    x = 58,784.70

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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.