Home / 100,417.55-138,577.62-55,094.69

Finding the Fourth Proportional to 100,417.55, 138,577.62 and 55,094.69

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Solution

The fourth proportional to 100,417.55, 138,577.62 and 55,094.69 is: 76,031.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,417.55 : 138,577.62 = 55,094.69 : x
  2. Step 2: Convert to fraction form
    100,417.55/138,577.62 = 55,094.69/x
  3. Step 3: Cross multiply
    100,417.55x = 138,577.62 × 55,094.69
  4. Step 4: Simplify right side
    100,417.55x = 7,634,891,014.84
  5. Step 5: Solve for x
    x = 7,634,891,014.84/100,417.55
  6. Step 6: Final answer
    x = 76,031.44

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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.