Home / 121,112.10-181,646.55-76,659.30

Finding the Fourth Proportional to 121,112.10, 181,646.55 and 76,659.30

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Solution

The fourth proportional to 121,112.10, 181,646.55 and 76,659.30 is: 114,975.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,112.10 : 181,646.55 = 76,659.30 : x
  2. Step 2: Convert to fraction form
    121,112.10/181,646.55 = 76,659.30/x
  3. Step 3: Cross multiply
    121,112.10x = 181,646.55 × 76,659.30
  4. Step 4: Simplify right side
    121,112.10x = 13,924,897,370.42
  5. Step 5: Solve for x
    x = 13,924,897,370.42/121,112.10
  6. Step 6: Final answer
    x = 114,975.28

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1.5x scale

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.