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Finding the Fourth Proportional to 243,073.82, 335,441.90 and 134,178.18

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Solution

The fourth proportional to 243,073.82, 335,441.90 and 134,178.18 is: 185,165.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,073.82 : 335,441.90 = 134,178.18 : x
  2. Step 2: Convert to fraction form
    243,073.82/335,441.90 = 134,178.18/x
  3. Step 3: Cross multiply
    243,073.82x = 335,441.90 × 134,178.18
  4. Step 4: Simplify right side
    243,073.82x = 45,008,983,637.74
  5. Step 5: Solve for x
    x = 45,008,983,637.74/243,073.82
  6. Step 6: Final answer
    x = 185,165.90

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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.