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Finding the Fourth Proportional to 117,151.38, 161,680.84 and 84,472.68

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Solution

The fourth proportional to 117,151.38, 161,680.84 and 84,472.68 is: 116,580.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,151.38 : 161,680.84 = 84,472.68 : x
  2. Step 2: Convert to fraction form
    117,151.38/161,680.84 = 84,472.68/x
  3. Step 3: Cross multiply
    117,151.38x = 161,680.84 × 84,472.68
  4. Step 4: Simplify right side
    117,151.38x = 13,657,613,859.45
  5. Step 5: Solve for x
    x = 13,657,613,859.45/117,151.38
  6. Step 6: Final answer
    x = 116,580.90

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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.