Home / 100,172.56-138,249.17-63,875.34

Finding the Fourth Proportional to 100,172.56, 138,249.17 and 63,875.34

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Solution

The fourth proportional to 100,172.56, 138,249.17 and 63,875.34 is: 88,155.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,172.56 : 138,249.17 = 63,875.34 : x
  2. Step 2: Convert to fraction form
    100,172.56/138,249.17 = 63,875.34/x
  3. Step 3: Cross multiply
    100,172.56x = 138,249.17 × 63,875.34
  4. Step 4: Simplify right side
    100,172.56x = 8,830,712,738.47
  5. Step 5: Solve for x
    x = 8,830,712,738.47/100,172.56
  6. Step 6: Final answer
    x = 88,155.01

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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.