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Finding the Fourth Proportional to 124,488, 171,734.22 and 84,215.88

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Solution

The fourth proportional to 124,488, 171,734.22 and 84,215.88 is: 116,177.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,488 : 171,734.22 = 84,215.88 : x
  2. Step 2: Convert to fraction form
    124,488/171,734.22 = 84,215.88/x
  3. Step 3: Cross multiply
    124,488x = 171,734.22 × 84,215.88
  4. Step 4: Simplify right side
    124,488x = 14,462,748,463.41
  5. Step 5: Solve for x
    x = 14,462,748,463.41/124,488
  6. Step 6: Final answer
    x = 116,177.85

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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.