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Finding the Fourth Proportional to 157,605.72, 236,408.58 and 67,628.91

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Solution

The fourth proportional to 157,605.72, 236,408.58 and 67,628.91 is: 101,443.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,605.72 : 236,408.58 = 67,628.91 : x
  2. Step 2: Convert to fraction form
    157,605.72/236,408.58 = 67,628.91/x
  3. Step 3: Cross multiply
    157,605.72x = 236,408.58 × 67,628.91
  4. Step 4: Simplify right side
    157,605.72x = 15,988,054,580.05
  5. Step 5: Solve for x
    x = 15,988,054,580.05/157,605.72
  6. Step 6: Final answer
    x = 101,443.37

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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.