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Finding the Fourth Proportional to 117,220.52, 161,764.10 and 63,505.76

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Solution

The fourth proportional to 117,220.52, 161,764.10 and 63,505.76 is: 87,637.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,220.52 : 161,764.10 = 63,505.76 : x
  2. Step 2: Convert to fraction form
    117,220.52/161,764.10 = 63,505.76/x
  3. Step 3: Cross multiply
    117,220.52x = 161,764.10 × 63,505.76
  4. Step 4: Simplify right side
    117,220.52x = 10,272,952,111.22
  5. Step 5: Solve for x
    x = 10,272,952,111.22/117,220.52
  6. Step 6: Final answer
    x = 87,637.83

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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.