Home / 159,019.16-219,446.90-87,406.52

Finding the Fourth Proportional to 159,019.16, 219,446.90 and 87,406.52

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Solution

The fourth proportional to 159,019.16, 219,446.90 and 87,406.52 is: 120,621.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,019.16 : 219,446.90 = 87,406.52 : x
  2. Step 2: Convert to fraction form
    159,019.16/219,446.90 = 87,406.52/x
  3. Step 3: Cross multiply
    159,019.16x = 219,446.90 × 87,406.52
  4. Step 4: Simplify right side
    159,019.16x = 19,181,088,319.52
  5. Step 5: Solve for x
    x = 19,181,088,319.52/159,019.16
  6. Step 6: Final answer
    x = 120,621.24

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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.