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Finding the Fourth Proportional to 118,475.88, 163,501.11 and 64,764.54

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Solution

The fourth proportional to 118,475.88, 163,501.11 and 64,764.54 is: 89,377.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,475.88 : 163,501.11 = 64,764.54 : x
  2. Step 2: Convert to fraction form
    118,475.88/163,501.11 = 64,764.54/x
  3. Step 3: Cross multiply
    118,475.88x = 163,501.11 × 64,764.54
  4. Step 4: Simplify right side
    118,475.88x = 10,589,074,178.64
  5. Step 5: Solve for x
    x = 10,589,074,178.64/118,475.88
  6. Step 6: Final answer
    x = 89,377.47

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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.