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Finding the Fourth Proportional to 124,457.50, 171,764.31 and 76,709.62

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Solution

The fourth proportional to 124,457.50, 171,764.31 and 76,709.62 is: 105,867.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,457.50 : 171,764.31 = 76,709.62 : x
  2. Step 2: Convert to fraction form
    124,457.50/171,764.31 = 76,709.62/x
  3. Step 3: Cross multiply
    124,457.50x = 171,764.31 × 76,709.62
  4. Step 4: Simplify right side
    124,457.50x = 13,175,974,949.66
  5. Step 5: Solve for x
    x = 13,175,974,949.66/124,457.50
  6. Step 6: Final answer
    x = 105,867.26

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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.