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Finding the Fourth Proportional to 118,484.66, 163,508.46 and 64,769.70

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Solution

The fourth proportional to 118,484.66, 163,508.46 and 64,769.70 is: 89,381.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,484.66 : 163,508.46 = 64,769.70 : x
  2. Step 2: Convert to fraction form
    118,484.66/163,508.46 = 64,769.70/x
  3. Step 3: Cross multiply
    118,484.66x = 163,508.46 × 64,769.70
  4. Step 4: Simplify right side
    118,484.66x = 10,590,393,901.66
  5. Step 5: Solve for x
    x = 10,590,393,901.66/118,484.66
  6. Step 6: Final answer
    x = 89,381.98

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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.