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Finding the Fourth Proportional to 202,139.70, 303,459.15 and 127,259.70

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Solution

The fourth proportional to 202,139.70, 303,459.15 and 127,259.70 is: 191,046.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,139.70 : 303,459.15 = 127,259.70 : x
  2. Step 2: Convert to fraction form
    202,139.70/303,459.15 = 127,259.70/x
  3. Step 3: Cross multiply
    202,139.70x = 303,459.15 × 127,259.70
  4. Step 4: Simplify right side
    202,139.70x = 38,618,120,391.26
  5. Step 5: Solve for x
    x = 38,618,120,391.26/202,139.70
  6. Step 6: Final answer
    x = 191,046.69

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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.