Home / 120,031.17-165,644.75-66,317.42

Finding the Fourth Proportional to 120,031.17, 165,644.75 and 66,317.42

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Solution

The fourth proportional to 120,031.17, 165,644.75 and 66,317.42 is: 91,519.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,031.17 : 165,644.75 = 66,317.42 : x
  2. Step 2: Convert to fraction form
    120,031.17/165,644.75 = 66,317.42/x
  3. Step 3: Cross multiply
    120,031.17x = 165,644.75 × 66,317.42
  4. Step 4: Simplify right side
    120,031.17x = 10,985,133,036.45
  5. Step 5: Solve for x
    x = 10,985,133,036.45/120,031.17
  6. Step 6: Final answer
    x = 91,519.01

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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.