Home / 130,704.64-180,340.96-76,985.44

Finding the Fourth Proportional to 130,704.64, 180,340.96 and 76,985.44

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Solution

The fourth proportional to 130,704.64, 180,340.96 and 76,985.44 is: 106,221.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,704.64 : 180,340.96 = 76,985.44 : x
  2. Step 2: Convert to fraction form
    130,704.64/180,340.96 = 76,985.44/x
  3. Step 3: Cross multiply
    130,704.64x = 180,340.96 × 76,985.44
  4. Step 4: Simplify right side
    130,704.64x = 13,883,628,155.62
  5. Step 5: Solve for x
    x = 13,883,628,155.62/130,704.64
  6. Step 6: Final answer
    x = 106,221.39

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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.