Home / 130,664.60-180,330.54-76,966.52

Finding the Fourth Proportional to 130,664.60, 180,330.54 and 76,966.52

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Solution

The fourth proportional to 130,664.60, 180,330.54 and 76,966.52 is: 106,221.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,664.60 : 180,330.54 = 76,966.52 : x
  2. Step 2: Convert to fraction form
    130,664.60/180,330.54 = 76,966.52/x
  3. Step 3: Cross multiply
    130,664.60x = 180,330.54 × 76,966.52
  4. Step 4: Simplify right side
    130,664.60x = 13,879,414,113.52
  5. Step 5: Solve for x
    x = 13,879,414,113.52/130,664.60
  6. Step 6: Final answer
    x = 106,221.69

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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.