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Finding the Fourth Proportional to 202,920.54, 279,966.87 and 122,372.70

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Solution

The fourth proportional to 202,920.54, 279,966.87 and 122,372.70 is: 168,836.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,920.54 : 279,966.87 = 122,372.70 : x
  2. Step 2: Convert to fraction form
    202,920.54/279,966.87 = 122,372.70/x
  3. Step 3: Cross multiply
    202,920.54x = 279,966.87 × 122,372.70
  4. Step 4: Simplify right side
    202,920.54x = 34,260,301,792.45
  5. Step 5: Solve for x
    x = 34,260,301,792.45/202,920.54
  6. Step 6: Final answer
    x = 168,836.05

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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.