Home / 130,701.22-180,469.26-100,438.80

Finding the Fourth Proportional to 130,701.22, 180,469.26 and 100,438.80

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Solution

The fourth proportional to 130,701.22, 180,469.26 and 100,438.80 is: 138,683.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,701.22 : 180,469.26 = 100,438.80 : x
  2. Step 2: Convert to fraction form
    130,701.22/180,469.26 = 100,438.80/x
  3. Step 3: Cross multiply
    130,701.22x = 180,469.26 × 100,438.80
  4. Step 4: Simplify right side
    130,701.22x = 18,126,115,911.29
  5. Step 5: Solve for x
    x = 18,126,115,911.29/130,701.22
  6. Step 6: Final answer
    x = 138,683.60

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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.