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Finding the Fourth Proportional to 203,633.04, 281,009.30 and 112,987.07

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Solution

The fourth proportional to 203,633.04, 281,009.30 and 112,987.07 is: 155,919.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,633.04 : 281,009.30 = 112,987.07 : x
  2. Step 2: Convert to fraction form
    203,633.04/281,009.30 = 112,987.07/x
  3. Step 3: Cross multiply
    203,633.04x = 281,009.30 × 112,987.07
  4. Step 4: Simplify right side
    203,633.04x = 31,750,417,449.75
  5. Step 5: Solve for x
    x = 31,750,417,449.75/203,633.04
  6. Step 6: Final answer
    x = 155,919.77

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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.