Home / 157,835.50-217,811.70-86,215.54

Finding the Fourth Proportional to 157,835.50, 217,811.70 and 86,215.54

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Solution

The fourth proportional to 157,835.50, 217,811.70 and 86,215.54 is: 118,976.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,835.50 : 217,811.70 = 86,215.54 : x
  2. Step 2: Convert to fraction form
    157,835.50/217,811.70 = 86,215.54/x
  3. Step 3: Cross multiply
    157,835.50x = 217,811.70 × 86,215.54
  4. Step 4: Simplify right side
    157,835.50x = 18,778,753,333.82
  5. Step 5: Solve for x
    x = 18,778,753,333.82/157,835.50
  6. Step 6: Final answer
    x = 118,976.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.