Home / 117,078.12-161,524.32-76,814.28

Finding the Fourth Proportional to 117,078.12, 161,524.32 and 76,814.28

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Solution

The fourth proportional to 117,078.12, 161,524.32 and 76,814.28 is: 105,975.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,078.12 : 161,524.32 = 76,814.28 : x
  2. Step 2: Convert to fraction form
    117,078.12/161,524.32 = 76,814.28/x
  3. Step 3: Cross multiply
    117,078.12x = 161,524.32 × 76,814.28
  4. Step 4: Simplify right side
    117,078.12x = 12,407,374,343.29
  5. Step 5: Solve for x
    x = 12,407,374,343.29/117,078.12
  6. Step 6: Final answer
    x = 105,975.18

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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.