Home / 121,110.10-181,643.55-76,657.30

Finding the Fourth Proportional to 121,110.10, 181,643.55 and 76,657.30

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Solution

The fourth proportional to 121,110.10, 181,643.55 and 76,657.30 is: 114,972.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,110.10 : 181,643.55 = 76,657.30 : x
  2. Step 2: Convert to fraction form
    121,110.10/181,643.55 = 76,657.30/x
  3. Step 3: Cross multiply
    121,110.10x = 181,643.55 × 76,657.30
  4. Step 4: Simplify right side
    121,110.10x = 13,924,304,105.42
  5. Step 5: Solve for x
    x = 13,924,304,105.42/121,110.10
  6. Step 6: Final answer
    x = 114,972.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.