Home / 130,789.22-180,145.34-100,516.62

Finding the Fourth Proportional to 130,789.22, 180,145.34 and 100,516.62

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Solution

The fourth proportional to 130,789.22, 180,145.34 and 100,516.62 is: 138,448.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,789.22 : 180,145.34 = 100,516.62 : x
  2. Step 2: Convert to fraction form
    130,789.22/180,145.34 = 100,516.62/x
  3. Step 3: Cross multiply
    130,789.22x = 180,145.34 × 100,516.62
  4. Step 4: Simplify right side
    130,789.22x = 18,107,600,685.55
  5. Step 5: Solve for x
    x = 18,107,600,685.55/130,789.22
  6. Step 6: Final answer
    x = 138,448.72

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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.