Home / 220,106.39-303,742.59-129,472.25

Finding the Fourth Proportional to 220,106.39, 303,742.59 and 129,472.25

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Solution

The fourth proportional to 220,106.39, 303,742.59 and 129,472.25 is: 178,669.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,106.39 : 303,742.59 = 129,472.25 : x
  2. Step 2: Convert to fraction form
    220,106.39/303,742.59 = 129,472.25/x
  3. Step 3: Cross multiply
    220,106.39x = 303,742.59 × 129,472.25
  4. Step 4: Simplify right side
    220,106.39x = 39,326,236,548.13
  5. Step 5: Solve for x
    x = 39,326,236,548.13/220,106.39
  6. Step 6: Final answer
    x = 178,669.22

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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.