Home / 120,741.18-166,623.47-75,445.45

Finding the Fourth Proportional to 120,741.18, 166,623.47 and 75,445.45

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Solution

The fourth proportional to 120,741.18, 166,623.47 and 75,445.45 is: 104,115.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,741.18 : 166,623.47 = 75,445.45 : x
  2. Step 2: Convert to fraction form
    120,741.18/166,623.47 = 75,445.45/x
  3. Step 3: Cross multiply
    120,741.18x = 166,623.47 × 75,445.45
  4. Step 4: Simplify right side
    120,741.18x = 12,570,982,844.66
  5. Step 5: Solve for x
    x = 12,570,982,844.66/120,741.18
  6. Step 6: Final answer
    x = 104,115.12

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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.