Home / 130,310.40-179,618.40-109,315.20

Finding the Fourth Proportional to 130,310.40, 179,618.40 and 109,315.20

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Solution

The fourth proportional to 130,310.40, 179,618.40 and 109,315.20 is: 150,678.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,310.40 : 179,618.40 = 109,315.20 : x
  2. Step 2: Convert to fraction form
    130,310.40/179,618.40 = 109,315.20/x
  3. Step 3: Cross multiply
    130,310.40x = 179,618.40 × 109,315.20
  4. Step 4: Simplify right side
    130,310.40x = 19,635,021,319.68
  5. Step 5: Solve for x
    x = 19,635,021,319.68/130,310.40
  6. Step 6: Final answer
    x = 150,678.85

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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.