Home / 120,612.47-166,308.81-76,946.73

Finding the Fourth Proportional to 120,612.47, 166,308.81 and 76,946.73

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Solution

The fourth proportional to 120,612.47, 166,308.81 and 76,946.73 is: 106,099.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,612.47 : 166,308.81 = 76,946.73 : x
  2. Step 2: Convert to fraction form
    120,612.47/166,308.81 = 76,946.73/x
  3. Step 3: Cross multiply
    120,612.47x = 166,308.81 × 76,946.73
  4. Step 4: Simplify right side
    120,612.47x = 12,796,918,811.14
  5. Step 5: Solve for x
    x = 12,796,918,811.14/120,612.47
  6. Step 6: Final answer
    x = 106,099.47

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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.