Home / 129,035.40-193,649.10-66,673.80

Finding the Fourth Proportional to 129,035.40, 193,649.10 and 66,673.80

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Solution

The fourth proportional to 129,035.40, 193,649.10 and 66,673.80 is: 100,060.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,035.40 : 193,649.10 = 66,673.80 : x
  2. Step 2: Convert to fraction form
    129,035.40/193,649.10 = 66,673.80/x
  3. Step 3: Cross multiply
    129,035.40x = 193,649.10 × 66,673.80
  4. Step 4: Simplify right side
    129,035.40x = 12,911,321,363.58
  5. Step 5: Solve for x
    x = 12,911,321,363.58/129,035.40
  6. Step 6: Final answer
    x = 100,060.30

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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.