Home / 151,732.91-209,360.15-87,189.68

Finding the Fourth Proportional to 151,732.91, 209,360.15 and 87,189.68

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Solution

The fourth proportional to 151,732.91, 209,360.15 and 87,189.68 is: 120,303.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,732.91 : 209,360.15 = 87,189.68 : x
  2. Step 2: Convert to fraction form
    151,732.91/209,360.15 = 87,189.68/x
  3. Step 3: Cross multiply
    151,732.91x = 209,360.15 × 87,189.68
  4. Step 4: Simplify right side
    151,732.91x = 18,254,044,210.46
  5. Step 5: Solve for x
    x = 18,254,044,210.46/151,732.91
  6. Step 6: Final answer
    x = 120,303.79

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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.