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Finding the Fourth Proportional to 121,513.40, 182,270.10 and 69,025.40

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Solution

The fourth proportional to 121,513.40, 182,270.10 and 69,025.40 is: 103,538.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,513.40 : 182,270.10 = 69,025.40 : x
  2. Step 2: Convert to fraction form
    121,513.40/182,270.10 = 69,025.40/x
  3. Step 3: Cross multiply
    121,513.40x = 182,270.10 × 69,025.40
  4. Step 4: Simplify right side
    121,513.40x = 12,581,266,560.54
  5. Step 5: Solve for x
    x = 12,581,266,560.54/121,513.40
  6. Step 6: Final answer
    x = 103,538.10

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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.