Home / 130,422.30-195,633.45-128,672.70

Finding the Fourth Proportional to 130,422.30, 195,633.45 and 128,672.70

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Solution

The fourth proportional to 130,422.30, 195,633.45 and 128,672.70 is: 193,009.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,422.30 : 195,633.45 = 128,672.70 : x
  2. Step 2: Convert to fraction form
    130,422.30/195,633.45 = 128,672.70/x
  3. Step 3: Cross multiply
    130,422.30x = 195,633.45 × 128,672.70
  4. Step 4: Simplify right side
    130,422.30x = 25,172,684,221.82
  5. Step 5: Solve for x
    x = 25,172,684,221.82/130,422.30
  6. Step 6: Final answer
    x = 193,009.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.