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Finding the Fourth Proportional to 202,117.40, 303,212.55 and 83,800.70

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Solution

The fourth proportional to 202,117.40, 303,212.55 and 83,800.70 is: 125,716.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,117.40 : 303,212.55 = 83,800.70 : x
  2. Step 2: Convert to fraction form
    202,117.40/303,212.55 = 83,800.70/x
  3. Step 3: Cross multiply
    202,117.40x = 303,212.55 × 83,800.70
  4. Step 4: Simplify right side
    202,117.40x = 25,409,423,938.79
  5. Step 5: Solve for x
    x = 25,409,423,938.79/202,117.40
  6. Step 6: Final answer
    x = 125,716.16

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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.