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Finding the Fourth Proportional to 138,368.40, 190,952.22 and 84,652.44

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Solution

The fourth proportional to 138,368.40, 190,952.22 and 84,652.44 is: 116,822.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,368.40 : 190,952.22 = 84,652.44 : x
  2. Step 2: Convert to fraction form
    138,368.40/190,952.22 = 84,652.44/x
  3. Step 3: Cross multiply
    138,368.40x = 190,952.22 × 84,652.44
  4. Step 4: Simplify right side
    138,368.40x = 16,164,571,346.42
  5. Step 5: Solve for x
    x = 16,164,571,346.42/138,368.40
  6. Step 6: Final answer
    x = 116,822.71

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1.5x scale

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.