Home / 159,890.91-220,645.95-87,291.32

Finding the Fourth Proportional to 159,890.91, 220,645.95 and 87,291.32

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Solution

The fourth proportional to 159,890.91, 220,645.95 and 87,291.32 is: 120,460.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,890.91 : 220,645.95 = 87,291.32 : x
  2. Step 2: Convert to fraction form
    159,890.91/220,645.95 = 87,291.32/x
  3. Step 3: Cross multiply
    159,890.91x = 220,645.95 × 87,291.32
  4. Step 4: Simplify right side
    159,890.91x = 19,260,476,228.15
  5. Step 5: Solve for x
    x = 19,260,476,228.15/159,890.91
  6. Step 6: Final answer
    x = 120,460.11

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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.