Home / 120,613.19-166,456.41-66,915.50

Finding the Fourth Proportional to 120,613.19, 166,456.41 and 66,915.50

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Solution

The fourth proportional to 120,613.19, 166,456.41 and 66,915.50 is: 92,349.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,613.19 : 166,456.41 = 66,915.50 : x
  2. Step 2: Convert to fraction form
    120,613.19/166,456.41 = 66,915.50/x
  3. Step 3: Cross multiply
    120,613.19x = 166,456.41 × 66,915.50
  4. Step 4: Simplify right side
    120,613.19x = 11,138,513,903.36
  5. Step 5: Solve for x
    x = 11,138,513,903.36/120,613.19
  6. Step 6: Final answer
    x = 92,349.05

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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.