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Finding the Fourth Proportional to 135,312.40, 202,661.40 and 80,016.40

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Solution

The fourth proportional to 135,312.40, 202,661.40 and 80,016.40 is: 119,842.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,312.40 : 202,661.40 = 80,016.40 : x
  2. Step 2: Convert to fraction form
    135,312.40/202,661.40 = 80,016.40/x
  3. Step 3: Cross multiply
    135,312.40x = 202,661.40 × 80,016.40
  4. Step 4: Simplify right side
    135,312.40x = 16,216,235,646.96
  5. Step 5: Solve for x
    x = 16,216,235,646.96/135,312.40
  6. Step 6: Final answer
    x = 119,842.94

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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.