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Finding the Fourth Proportional to 118,490.58, 163,510.38 and 64,764.90

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Solution

The fourth proportional to 118,490.58, 163,510.38 and 64,764.90 is: 89,371.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,490.58 : 163,510.38 = 64,764.90 : x
  2. Step 2: Convert to fraction form
    118,490.58/163,510.38 = 64,764.90/x
  3. Step 3: Cross multiply
    118,490.58x = 163,510.38 × 64,764.90
  4. Step 4: Simplify right side
    118,490.58x = 10,589,733,409.66
  5. Step 5: Solve for x
    x = 10,589,733,409.66/118,490.58
  6. Step 6: Final answer
    x = 89,371.94

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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.