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Finding the Fourth Proportional to 159,447.72, 239,007.48 and 70,743

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Solution

The fourth proportional to 159,447.72, 239,007.48 and 70,743 is: 106,041.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,447.72 : 239,007.48 = 70,743 : x
  2. Step 2: Convert to fraction form
    159,447.72/239,007.48 = 70,743/x
  3. Step 3: Cross multiply
    159,447.72x = 239,007.48 × 70,743
  4. Step 4: Simplify right side
    159,447.72x = 16,908,106,157.64
  5. Step 5: Solve for x
    x = 16,908,106,157.64/159,447.72
  6. Step 6: Final answer
    x = 106,041.69

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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.