Home / 130,339.76-179,770.44-90,120.84

Finding the Fourth Proportional to 130,339.76, 179,770.44 and 90,120.84

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Solution

The fourth proportional to 130,339.76, 179,770.44 and 90,120.84 is: 124,298.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,339.76 : 179,770.44 = 90,120.84 : x
  2. Step 2: Convert to fraction form
    130,339.76/179,770.44 = 90,120.84/x
  3. Step 3: Cross multiply
    130,339.76x = 179,770.44 × 90,120.84
  4. Step 4: Simplify right side
    130,339.76x = 16,201,063,059.97
  5. Step 5: Solve for x
    x = 16,201,063,059.97/130,339.76
  6. Step 6: Final answer
    x = 124,298.70

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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.