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Finding the Fourth Proportional to 108,855.15, 163,345.79 and 45,669.68

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Solution

The fourth proportional to 108,855.15, 163,345.79 and 45,669.68 is: 68,530.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,855.15 : 163,345.79 = 45,669.68 : x
  2. Step 2: Convert to fraction form
    108,855.15/163,345.79 = 45,669.68/x
  3. Step 3: Cross multiply
    108,855.15x = 163,345.79 × 45,669.68
  4. Step 4: Simplify right side
    108,855.15x = 7,459,949,958.65
  5. Step 5: Solve for x
    x = 7,459,949,958.65/108,855.15
  6. Step 6: Final answer
    x = 68,530.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.