Home / 120,430.12-166,202.94-66,720.10

Finding the Fourth Proportional to 120,430.12, 166,202.94 and 66,720.10

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Solution

The fourth proportional to 120,430.12, 166,202.94 and 66,720.10 is: 92,078.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,430.12 : 166,202.94 = 66,720.10 : x
  2. Step 2: Convert to fraction form
    120,430.12/166,202.94 = 66,720.10/x
  3. Step 3: Cross multiply
    120,430.12x = 166,202.94 × 66,720.10
  4. Step 4: Simplify right side
    120,430.12x = 11,089,076,777.09
  5. Step 5: Solve for x
    x = 11,089,076,777.09/120,430.12
  6. Step 6: Final answer
    x = 92,078.93

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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.