Home / 161,881.05-223,385.40-90,256.80

Finding the Fourth Proportional to 161,881.05, 223,385.40 and 90,256.80

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Solution

The fourth proportional to 161,881.05, 223,385.40 and 90,256.80 is: 124,548.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,881.05 : 223,385.40 = 90,256.80 : x
  2. Step 2: Convert to fraction form
    161,881.05/223,385.40 = 90,256.80/x
  3. Step 3: Cross multiply
    161,881.05x = 223,385.40 × 90,256.80
  4. Step 4: Simplify right side
    161,881.05x = 20,162,051,370.72
  5. Step 5: Solve for x
    x = 20,162,051,370.72/161,881.05
  6. Step 6: Final answer
    x = 124,548.56

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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.