Home / 130,909.68-180,662.40-77,226.12

Finding the Fourth Proportional to 130,909.68, 180,662.40 and 77,226.12

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Solution

The fourth proportional to 130,909.68, 180,662.40 and 77,226.12 is: 106,576.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,909.68 : 180,662.40 = 77,226.12 : x
  2. Step 2: Convert to fraction form
    130,909.68/180,662.40 = 77,226.12/x
  3. Step 3: Cross multiply
    130,909.68x = 180,662.40 × 77,226.12
  4. Step 4: Simplify right side
    130,909.68x = 13,951,856,181.89
  5. Step 5: Solve for x
    x = 13,951,856,181.89/130,909.68
  6. Step 6: Final answer
    x = 106,576.20

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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.