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Finding the Fourth Proportional to 118,581.56, 163,640.40 and 64,866.11

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Solution

The fourth proportional to 118,581.56, 163,640.40 and 64,866.11 is: 89,514.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,581.56 : 163,640.40 = 64,866.11 : x
  2. Step 2: Convert to fraction form
    118,581.56/163,640.40 = 64,866.11/x
  3. Step 3: Cross multiply
    118,581.56x = 163,640.40 × 64,866.11
  4. Step 4: Simplify right side
    118,581.56x = 10,614,715,368.64
  5. Step 5: Solve for x
    x = 10,614,715,368.64/118,581.56
  6. Step 6: Final answer
    x = 89,514.05

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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.