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Finding the Fourth Proportional to 124,389.84, 171,656.91 and 67,800

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Solution

The fourth proportional to 124,389.84, 171,656.91 and 67,800 is: 93,563.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,389.84 : 171,656.91 = 67,800 : x
  2. Step 2: Convert to fraction form
    124,389.84/171,656.91 = 67,800/x
  3. Step 3: Cross multiply
    124,389.84x = 171,656.91 × 67,800
  4. Step 4: Simplify right side
    124,389.84x = 11,638,338,498
  5. Step 5: Solve for x
    x = 11,638,338,498/124,389.84
  6. Step 6: Final answer
    x = 93,563.42

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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.