Home / 159,421.47-220,003.20-87,803.70

Finding the Fourth Proportional to 159,421.47, 220,003.20 and 87,803.70

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Solution

The fourth proportional to 159,421.47, 220,003.20 and 87,803.70 is: 121,169.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,421.47 : 220,003.20 = 87,803.70 : x
  2. Step 2: Convert to fraction form
    159,421.47/220,003.20 = 87,803.70/x
  3. Step 3: Cross multiply
    159,421.47x = 220,003.20 × 87,803.70
  4. Step 4: Simplify right side
    159,421.47x = 19,317,094,971.84
  5. Step 5: Solve for x
    x = 19,317,094,971.84/159,421.47
  6. Step 6: Final answer
    x = 121,169.97

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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.