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Finding the Fourth Proportional to 150,045.81, 207,082.05 and 98,406.29

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Solution

The fourth proportional to 150,045.81, 207,082.05 and 98,406.29 is: 135,813.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,045.81 : 207,082.05 = 98,406.29 : x
  2. Step 2: Convert to fraction form
    150,045.81/207,082.05 = 98,406.29/x
  3. Step 3: Cross multiply
    150,045.81x = 207,082.05 × 98,406.29
  4. Step 4: Simplify right side
    150,045.81x = 20,378,175,230.68
  5. Step 5: Solve for x
    x = 20,378,175,230.68/150,045.81
  6. Step 6: Final answer
    x = 135,813.02

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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.