Home / 220,160.77-303,823.07-129,520.15

Finding the Fourth Proportional to 220,160.77, 303,823.07 and 129,520.15

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Solution

The fourth proportional to 220,160.77, 303,823.07 and 129,520.15 is: 178,738.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,160.77 : 303,823.07 = 129,520.15 : x
  2. Step 2: Convert to fraction form
    220,160.77/303,823.07 = 129,520.15/x
  3. Step 3: Cross multiply
    220,160.77x = 303,823.07 × 129,520.15
  4. Step 4: Simplify right side
    220,160.77x = 39,351,208,678.40
  5. Step 5: Solve for x
    x = 39,351,208,678.40/220,160.77
  6. Step 6: Final answer
    x = 178,738.52

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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.