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Finding the Fourth Proportional to 124,450.56, 171,830.16 and 76,718.88

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Solution

The fourth proportional to 124,450.56, 171,830.16 and 76,718.88 is: 105,926.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,450.56 : 171,830.16 = 76,718.88 : x
  2. Step 2: Convert to fraction form
    124,450.56/171,830.16 = 76,718.88/x
  3. Step 3: Cross multiply
    124,450.56x = 171,830.16 × 76,718.88
  4. Step 4: Simplify right side
    124,450.56x = 13,182,617,425.42
  5. Step 5: Solve for x
    x = 13,182,617,425.42/124,450.56
  6. Step 6: Final answer
    x = 105,926.54

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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.