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Finding the Fourth Proportional to 120,870.30, 181,305.45 and 92,844.30

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Solution

The fourth proportional to 120,870.30, 181,305.45 and 92,844.30 is: 139,266.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,870.30 : 181,305.45 = 92,844.30 : x
  2. Step 2: Convert to fraction form
    120,870.30/181,305.45 = 92,844.30/x
  3. Step 3: Cross multiply
    120,870.30x = 181,305.45 × 92,844.30
  4. Step 4: Simplify right side
    120,870.30x = 16,833,177,591.44
  5. Step 5: Solve for x
    x = 16,833,177,591.44/120,870.30
  6. Step 6: Final answer
    x = 139,266.45

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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.