Home / 120,329.81-166,056.45-66,615.71

Finding the Fourth Proportional to 120,329.81, 166,056.45 and 66,615.71

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Solution

The fourth proportional to 120,329.81, 166,056.45 and 66,615.71 is: 91,930.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,329.81 : 166,056.45 = 66,615.71 : x
  2. Step 2: Convert to fraction form
    120,329.81/166,056.45 = 66,615.71/x
  3. Step 3: Cross multiply
    120,329.81x = 166,056.45 × 66,615.71
  4. Step 4: Simplify right side
    120,329.81x = 11,061,968,316.83
  5. Step 5: Solve for x
    x = 11,061,968,316.83/120,329.81
  6. Step 6: Final answer
    x = 91,930.41

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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.