Home / 221,677.76-305,910.88-126,182.40

Finding the Fourth Proportional to 221,677.76, 305,910.88 and 126,182.40

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Solution

The fourth proportional to 221,677.76, 305,910.88 and 126,182.40 is: 174,129.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,677.76 : 305,910.88 = 126,182.40 : x
  2. Step 2: Convert to fraction form
    221,677.76/305,910.88 = 126,182.40/x
  3. Step 3: Cross multiply
    221,677.76x = 305,910.88 × 126,182.40
  4. Step 4: Simplify right side
    221,677.76x = 38,600,569,024.51
  5. Step 5: Solve for x
    x = 38,600,569,024.51/221,677.76
  6. Step 6: Final answer
    x = 174,129.19

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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.