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Finding the Fourth Proportional to 130,900.80, 180,591.12 and 75,699.92

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Solution

The fourth proportional to 130,900.80, 180,591.12 and 75,699.92 is: 104,435.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,900.80 : 180,591.12 = 75,699.92 : x
  2. Step 2: Convert to fraction form
    130,900.80/180,591.12 = 75,699.92/x
  3. Step 3: Cross multiply
    130,900.80x = 180,591.12 × 75,699.92
  4. Step 4: Simplify right side
    130,900.80x = 13,670,733,336.71
  5. Step 5: Solve for x
    x = 13,670,733,336.71/130,900.80
  6. Step 6: Final answer
    x = 104,435.83

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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.