Home / 177,649.10-245,167.41-100,143.87

Finding the Fourth Proportional to 177,649.10, 245,167.41 and 100,143.87

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Solution

The fourth proportional to 177,649.10, 245,167.41 and 100,143.87 is: 138,205.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,649.10 : 245,167.41 = 100,143.87 : x
  2. Step 2: Convert to fraction form
    177,649.10/245,167.41 = 100,143.87/x
  3. Step 3: Cross multiply
    177,649.10x = 245,167.41 × 100,143.87
  4. Step 4: Simplify right side
    177,649.10x = 24,552,012,817.66
  5. Step 5: Solve for x
    x = 24,552,012,817.66/177,649.10
  6. Step 6: Final answer
    x = 138,205.11

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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.