Home / 124,762.89-172,123.97-76,933.20

Finding the Fourth Proportional to 124,762.89, 172,123.97 and 76,933.20

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Solution

The fourth proportional to 124,762.89, 172,123.97 and 76,933.20 is: 106,137.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,762.89 : 172,123.97 = 76,933.20 : x
  2. Step 2: Convert to fraction form
    124,762.89/172,123.97 = 76,933.20/x
  3. Step 3: Cross multiply
    124,762.89x = 172,123.97 × 76,933.20
  4. Step 4: Simplify right side
    124,762.89x = 13,242,047,424.14
  5. Step 5: Solve for x
    x = 13,242,047,424.14/124,762.89
  6. Step 6: Final answer
    x = 106,137.71

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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.