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Finding the Fourth Proportional to 90,230.40, 135,345.60 and 73,827.90

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Solution

The fourth proportional to 90,230.40, 135,345.60 and 73,827.90 is: 110,741.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,230.40 : 135,345.60 = 73,827.90 : x
  2. Step 2: Convert to fraction form
    90,230.40/135,345.60 = 73,827.90/x
  3. Step 3: Cross multiply
    90,230.40x = 135,345.60 × 73,827.90
  4. Step 4: Simplify right side
    90,230.40x = 9,992,281,422.24
  5. Step 5: Solve for x
    x = 9,992,281,422.24/90,230.40
  6. Step 6: Final answer
    x = 110,741.85

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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.