Home / 123,145.02-169,826.75-77,744.11

Finding the Fourth Proportional to 123,145.02, 169,826.75 and 77,744.11

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Solution

The fourth proportional to 123,145.02, 169,826.75 and 77,744.11 is: 107,215.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,145.02 : 169,826.75 = 77,744.11 : x
  2. Step 2: Convert to fraction form
    123,145.02/169,826.75 = 77,744.11/x
  3. Step 3: Cross multiply
    123,145.02x = 169,826.75 × 77,744.11
  4. Step 4: Simplify right side
    123,145.02x = 13,203,029,532.94
  5. Step 5: Solve for x
    x = 13,203,029,532.94/123,145.02
  6. Step 6: Final answer
    x = 107,215.29

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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.