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Finding the Fourth Proportional to 121,007.66, 166,966.65 and 73,265.45

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Solution

The fourth proportional to 121,007.66, 166,966.65 and 73,265.45 is: 101,091.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,007.66 : 166,966.65 = 73,265.45 : x
  2. Step 2: Convert to fraction form
    121,007.66/166,966.65 = 73,265.45/x
  3. Step 3: Cross multiply
    121,007.66x = 166,966.65 × 73,265.45
  4. Step 4: Simplify right side
    121,007.66x = 12,232,885,912.41
  5. Step 5: Solve for x
    x = 12,232,885,912.41/121,007.66
  6. Step 6: Final answer
    x = 101,091.84

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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.