Home / 209,341.70-288,768.56-131,693.86

Finding the Fourth Proportional to 209,341.70, 288,768.56 and 131,693.86

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Solution

The fourth proportional to 209,341.70, 288,768.56 and 131,693.86 is: 181,660.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,341.70 : 288,768.56 = 131,693.86 : x
  2. Step 2: Convert to fraction form
    209,341.70/288,768.56 = 131,693.86/x
  3. Step 3: Cross multiply
    209,341.70x = 288,768.56 × 131,693.86
  4. Step 4: Simplify right side
    209,341.70x = 38,029,046,606.81
  5. Step 5: Solve for x
    x = 38,029,046,606.81/209,341.70
  6. Step 6: Final answer
    x = 181,660.16

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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.