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Finding the Fourth Proportional to 172,387.83, 258,823.95 and 88,208.37

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Solution

The fourth proportional to 172,387.83, 258,823.95 and 88,208.37 is: 132,436.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,387.83 : 258,823.95 = 88,208.37 : x
  2. Step 2: Convert to fraction form
    172,387.83/258,823.95 = 88,208.37/x
  3. Step 3: Cross multiply
    172,387.83x = 258,823.95 × 88,208.37
  4. Step 4: Simplify right side
    172,387.83x = 22,830,438,746.46
  5. Step 5: Solve for x
    x = 22,830,438,746.46/172,387.83
  6. Step 6: Final answer
    x = 132,436.49

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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.