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Finding the Fourth Proportional to 108,998.32, 150,418.20 and 63,678.88

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Solution

The fourth proportional to 108,998.32, 150,418.20 and 63,678.88 is: 87,877.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,998.32 : 150,418.20 = 63,678.88 : x
  2. Step 2: Convert to fraction form
    108,998.32/150,418.20 = 63,678.88/x
  3. Step 3: Cross multiply
    108,998.32x = 150,418.20 × 63,678.88
  4. Step 4: Simplify right side
    108,998.32x = 9,578,462,507.62
  5. Step 5: Solve for x
    x = 9,578,462,507.62/108,998.32
  6. Step 6: Final answer
    x = 87,877.16

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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.