Home / 128,738.26-192,703.47-88,522.57

Finding the Fourth Proportional to 128,738.26, 192,703.47 and 88,522.57

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Solution

The fourth proportional to 128,738.26, 192,703.47 and 88,522.57 is: 132,506.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,738.26 : 192,703.47 = 88,522.57 : x
  2. Step 2: Convert to fraction form
    128,738.26/192,703.47 = 88,522.57/x
  3. Step 3: Cross multiply
    128,738.26x = 192,703.47 × 88,522.57
  4. Step 4: Simplify right side
    128,738.26x = 17,058,606,412.32
  5. Step 5: Solve for x
    x = 17,058,606,412.32/128,738.26
  6. Step 6: Final answer
    x = 132,506.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.