Home / 159,143.36-219,612.80-87,523.16

Finding the Fourth Proportional to 159,143.36, 219,612.80 and 87,523.16

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Solution

The fourth proportional to 159,143.36, 219,612.80 and 87,523.16 is: 120,779.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,143.36 : 219,612.80 = 87,523.16 : x
  2. Step 2: Convert to fraction form
    159,143.36/219,612.80 = 87,523.16/x
  3. Step 3: Cross multiply
    159,143.36x = 219,612.80 × 87,523.16
  4. Step 4: Simplify right side
    159,143.36x = 19,221,205,353.19
  5. Step 5: Solve for x
    x = 19,221,205,353.19/159,143.36
  6. Step 6: Final answer
    x = 120,779.19

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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.