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Finding the Fourth Proportional to 143,556.91, 215,367.51 and 43,724.91

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Solution

The fourth proportional to 143,556.91, 215,367.51 and 43,724.91 is: 65,597.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,556.91 : 215,367.51 = 43,724.91 : x
  2. Step 2: Convert to fraction form
    143,556.91/215,367.51 = 43,724.91/x
  3. Step 3: Cross multiply
    143,556.91x = 215,367.51 × 43,724.91
  4. Step 4: Simplify right side
    143,556.91x = 9,416,925,717.32
  5. Step 5: Solve for x
    x = 9,416,925,717.32/143,556.91
  6. Step 6: Final answer
    x = 65,597.16

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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.