Home / 159,614.51-220,261.28-87,015.83

Finding the Fourth Proportional to 159,614.51, 220,261.28 and 87,015.83

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Solution

The fourth proportional to 159,614.51, 220,261.28 and 87,015.83 is: 120,078.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,614.51 : 220,261.28 = 87,015.83 : x
  2. Step 2: Convert to fraction form
    159,614.51/220,261.28 = 87,015.83/x
  3. Step 3: Cross multiply
    159,614.51x = 220,261.28 × 87,015.83
  4. Step 4: Simplify right side
    159,614.51x = 19,166,216,559.68
  5. Step 5: Solve for x
    x = 19,166,216,559.68/159,614.51
  6. Step 6: Final answer
    x = 120,078.16

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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.