Home / 123,717.72-170,732.44-67,129.10

Finding the Fourth Proportional to 123,717.72, 170,732.44 and 67,129.10

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Solution

The fourth proportional to 123,717.72, 170,732.44 and 67,129.10 is: 92,639.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,717.72 : 170,732.44 = 67,129.10 : x
  2. Step 2: Convert to fraction form
    123,717.72/170,732.44 = 67,129.10/x
  3. Step 3: Cross multiply
    123,717.72x = 170,732.44 × 67,129.10
  4. Step 4: Simplify right side
    123,717.72x = 11,461,115,038.00
  5. Step 5: Solve for x
    x = 11,461,115,038.00/123,717.72
  6. Step 6: Final answer
    x = 92,639.24

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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.