Home / 109,871.10-164,813.08-42,403.49

Finding the Fourth Proportional to 109,871.10, 164,813.08 and 42,403.49

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Solution

The fourth proportional to 109,871.10, 164,813.08 and 42,403.49 is: 63,607.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,871.10 : 164,813.08 = 42,403.49 : x
  2. Step 2: Convert to fraction form
    109,871.10/164,813.08 = 42,403.49/x
  3. Step 3: Cross multiply
    109,871.10x = 164,813.08 × 42,403.49
  4. Step 4: Simplify right side
    109,871.10x = 6,988,649,789.65
  5. Step 5: Solve for x
    x = 6,988,649,789.65/109,871.10
  6. Step 6: Final answer
    x = 63,607.72

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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.