Home / 202,809.12-279,783.48-131,212.20

Finding the Fourth Proportional to 202,809.12, 279,783.48 and 131,212.20

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Solution

The fourth proportional to 202,809.12, 279,783.48 and 131,212.20 is: 181,012.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,809.12 : 279,783.48 = 131,212.20 : x
  2. Step 2: Convert to fraction form
    202,809.12/279,783.48 = 131,212.20/x
  3. Step 3: Cross multiply
    202,809.12x = 279,783.48 × 131,212.20
  4. Step 4: Simplify right side
    202,809.12x = 36,711,005,934.46
  5. Step 5: Solve for x
    x = 36,711,005,934.46/202,809.12
  6. Step 6: Final answer
    x = 181,012.60

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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.