Home / 120,430.25-166,203.11-66,720.23

Finding the Fourth Proportional to 120,430.25, 166,203.11 and 66,720.23

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Solution

The fourth proportional to 120,430.25, 166,203.11 and 66,720.23 is: 92,079.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,430.25 : 166,203.11 = 66,720.23 : x
  2. Step 2: Convert to fraction form
    120,430.25/166,203.11 = 66,720.23/x
  3. Step 3: Cross multiply
    120,430.25x = 166,203.11 × 66,720.23
  4. Step 4: Simplify right side
    120,430.25x = 11,089,109,061.70
  5. Step 5: Solve for x
    x = 11,089,109,061.70/120,430.25
  6. Step 6: Final answer
    x = 92,079.10

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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.