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Finding the Fourth Proportional to 160,536.86, 221,538.42 and 87,939.17

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Solution

The fourth proportional to 160,536.86, 221,538.42 and 87,939.17 is: 121,354.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,536.86 : 221,538.42 = 87,939.17 : x
  2. Step 2: Convert to fraction form
    160,536.86/221,538.42 = 87,939.17/x
  3. Step 3: Cross multiply
    160,536.86x = 221,538.42 × 87,939.17
  4. Step 4: Simplify right side
    160,536.86x = 19,481,903,670.22
  5. Step 5: Solve for x
    x = 19,481,903,670.22/160,536.86
  6. Step 6: Final answer
    x = 121,354.71

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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.