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Finding the Fourth Proportional to 118,192.56, 163,102.68 and 64,478.88

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Solution

The fourth proportional to 118,192.56, 163,102.68 and 64,478.88 is: 88,979.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,192.56 : 163,102.68 = 64,478.88 : x
  2. Step 2: Convert to fraction form
    118,192.56/163,102.68 = 64,478.88/x
  3. Step 3: Cross multiply
    118,192.56x = 163,102.68 × 64,478.88
  4. Step 4: Simplify right side
    118,192.56x = 10,516,678,131.40
  5. Step 5: Solve for x
    x = 10,516,678,131.40/118,192.56
  6. Step 6: Final answer
    x = 88,979.19

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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.