Home / 145,024.82-217,528.43-86,234.61

Finding the Fourth Proportional to 145,024.82, 217,528.43 and 86,234.61

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Solution

The fourth proportional to 145,024.82, 217,528.43 and 86,234.61 is: 129,346.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,024.82 : 217,528.43 = 86,234.61 : x
  2. Step 2: Convert to fraction form
    145,024.82/217,528.43 = 86,234.61/x
  3. Step 3: Cross multiply
    145,024.82x = 217,528.43 × 86,234.61
  4. Step 4: Simplify right side
    145,024.82x = 18,758,478,893.79
  5. Step 5: Solve for x
    x = 18,758,478,893.79/145,024.82
  6. Step 6: Final answer
    x = 129,346.68

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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.