Home / 130,659.60-180,323.64-76,961.52

Finding the Fourth Proportional to 130,659.60, 180,323.64 and 76,961.52

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Solution

The fourth proportional to 130,659.60, 180,323.64 and 76,961.52 is: 106,214.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,659.60 : 180,323.64 = 76,961.52 : x
  2. Step 2: Convert to fraction form
    130,659.60/180,323.64 = 76,961.52/x
  3. Step 3: Cross multiply
    130,659.60x = 180,323.64 × 76,961.52
  4. Step 4: Simplify right side
    130,659.60x = 13,877,981,426.33
  5. Step 5: Solve for x
    x = 13,877,981,426.33/130,659.60
  6. Step 6: Final answer
    x = 106,214.79

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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.