Home / 161,803.20-223,289.45-90,187.76

Finding the Fourth Proportional to 161,803.20, 223,289.45 and 90,187.76

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Solution

The fourth proportional to 161,803.20, 223,289.45 and 90,187.76 is: 124,459.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,803.20 : 223,289.45 = 90,187.76 : x
  2. Step 2: Convert to fraction form
    161,803.20/223,289.45 = 90,187.76/x
  3. Step 3: Cross multiply
    161,803.20x = 223,289.45 × 90,187.76
  4. Step 4: Simplify right side
    161,803.20x = 20,137,976,110.83
  5. Step 5: Solve for x
    x = 20,137,976,110.83/161,803.20
  6. Step 6: Final answer
    x = 124,459.69

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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.