Home / 221,089.54-305,111.76-125,612.44

Finding the Fourth Proportional to 221,089.54, 305,111.76 and 125,612.44

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Solution

The fourth proportional to 221,089.54, 305,111.76 and 125,612.44 is: 173,349.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,089.54 : 305,111.76 = 125,612.44 : x
  2. Step 2: Convert to fraction form
    221,089.54/305,111.76 = 125,612.44/x
  3. Step 3: Cross multiply
    221,089.54x = 305,111.76 × 125,612.44
  4. Step 4: Simplify right side
    221,089.54x = 38,325,832,646.29
  5. Step 5: Solve for x
    x = 38,325,832,646.29/221,089.54
  6. Step 6: Final answer
    x = 173,349.82

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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.