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Finding the Fourth Proportional to 143,572.43, 215,389.42 and 43,740.67

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Solution

The fourth proportional to 143,572.43, 215,389.42 and 43,740.67 is: 65,620.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,572.43 : 215,389.42 = 43,740.67 : x
  2. Step 2: Convert to fraction form
    143,572.43/215,389.42 = 43,740.67/x
  3. Step 3: Cross multiply
    143,572.43x = 215,389.42 × 43,740.67
  4. Step 4: Simplify right side
    143,572.43x = 9,421,276,893.89
  5. Step 5: Solve for x
    x = 9,421,276,893.89/143,572.43
  6. Step 6: Final answer
    x = 65,620.38

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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.