Home / 159,492.06-220,109-87,872.08

Finding the Fourth Proportional to 159,492.06, 220,109 and 87,872.08

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Solution

The fourth proportional to 159,492.06, 220,109 and 87,872.08 is: 121,268.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,492.06 : 220,109 = 87,872.08 : x
  2. Step 2: Convert to fraction form
    159,492.06/220,109 = 87,872.08/x
  3. Step 3: Cross multiply
    159,492.06x = 220,109 × 87,872.08
  4. Step 4: Simplify right side
    159,492.06x = 19,341,435,656.72
  5. Step 5: Solve for x
    x = 19,341,435,656.72/159,492.06
  6. Step 6: Final answer
    x = 121,268.96

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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.