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Finding the Fourth Proportional to 124,980.58, 172,468.96 and 71,282.89

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Solution

The fourth proportional to 124,980.58, 172,468.96 and 71,282.89 is: 98,367.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,980.58 : 172,468.96 = 71,282.89 : x
  2. Step 2: Convert to fraction form
    124,980.58/172,468.96 = 71,282.89/x
  3. Step 3: Cross multiply
    124,980.58x = 172,468.96 × 71,282.89
  4. Step 4: Simplify right side
    124,980.58x = 12,294,085,904.09
  5. Step 5: Solve for x
    x = 12,294,085,904.09/124,980.58
  6. Step 6: Final answer
    x = 98,367.97

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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.