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Finding the Fourth Proportional to 118,342.34, 177,601.67 and 86,833.82

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Solution

The fourth proportional to 118,342.34, 177,601.67 and 86,833.82 is: 130,315.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,342.34 : 177,601.67 = 86,833.82 : x
  2. Step 2: Convert to fraction form
    118,342.34/177,601.67 = 86,833.82/x
  3. Step 3: Cross multiply
    118,342.34x = 177,601.67 × 86,833.82
  4. Step 4: Simplify right side
    118,342.34x = 15,421,830,122.30
  5. Step 5: Solve for x
    x = 15,421,830,122.30/118,342.34
  6. Step 6: Final answer
    x = 130,315.41

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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.