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Finding the Fourth Proportional to 111,447.70, 167,433.99 and 90,802.42

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Solution

The fourth proportional to 111,447.70, 167,433.99 and 90,802.42 is: 136,417.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,447.70 : 167,433.99 = 90,802.42 : x
  2. Step 2: Convert to fraction form
    111,447.70/167,433.99 = 90,802.42/x
  3. Step 3: Cross multiply
    111,447.70x = 167,433.99 × 90,802.42
  4. Step 4: Simplify right side
    111,447.70x = 15,203,410,723.16
  5. Step 5: Solve for x
    x = 15,203,410,723.16/111,447.70
  6. Step 6: Final answer
    x = 136,417.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.