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Finding the Fourth Proportional to 202,763.67, 279,809.77 and 112,123.45

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Solution

The fourth proportional to 202,763.67, 279,809.77 and 112,123.45 is: 154,728.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,763.67 : 279,809.77 = 112,123.45 : x
  2. Step 2: Convert to fraction form
    202,763.67/279,809.77 = 112,123.45/x
  3. Step 3: Cross multiply
    202,763.67x = 279,809.77 × 112,123.45
  4. Step 4: Simplify right side
    202,763.67x = 31,373,236,195.49
  5. Step 5: Solve for x
    x = 31,373,236,195.49/202,763.67
  6. Step 6: Final answer
    x = 154,728.10

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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.