Home / 117,130.96-161,530.08-76,879.63

Finding the Fourth Proportional to 117,130.96, 161,530.08 and 76,879.63

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Solution

The fourth proportional to 117,130.96, 161,530.08 and 76,879.63 is: 106,021.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,130.96 : 161,530.08 = 76,879.63 : x
  2. Step 2: Convert to fraction form
    117,130.96/161,530.08 = 76,879.63/x
  3. Step 3: Cross multiply
    117,130.96x = 161,530.08 × 76,879.63
  4. Step 4: Simplify right side
    117,130.96x = 12,418,372,784.27
  5. Step 5: Solve for x
    x = 12,418,372,784.27/117,130.96
  6. Step 6: Final answer
    x = 106,021.27

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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.