Home / 221,585.09-305,783.51-126,089.73

Finding the Fourth Proportional to 221,585.09, 305,783.51 and 126,089.73

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Solution

The fourth proportional to 221,585.09, 305,783.51 and 126,089.73 is: 174,001.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,585.09 : 305,783.51 = 126,089.73 : x
  2. Step 2: Convert to fraction form
    221,585.09/305,783.51 = 126,089.73/x
  3. Step 3: Cross multiply
    221,585.09x = 305,783.51 × 126,089.73
  4. Step 4: Simplify right side
    221,585.09x = 38,556,159,583.90
  5. Step 5: Solve for x
    x = 38,556,159,583.90/221,585.09
  6. Step 6: Final answer
    x = 174,001.60

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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.