Home / 128,028.98-176,508.24-89,737.04

Finding the Fourth Proportional to 128,028.98, 176,508.24 and 89,737.04

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Solution

The fourth proportional to 128,028.98, 176,508.24 and 89,737.04 is: 123,716.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,028.98 : 176,508.24 = 89,737.04 : x
  2. Step 2: Convert to fraction form
    128,028.98/176,508.24 = 89,737.04/x
  3. Step 3: Cross multiply
    128,028.98x = 176,508.24 × 89,737.04
  4. Step 4: Simplify right side
    128,028.98x = 15,839,326,993.21
  5. Step 5: Solve for x
    x = 15,839,326,993.21/128,028.98
  6. Step 6: Final answer
    x = 123,716.73

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1.5x scale

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.