Home / 120,281.40-165,984.12-66,566.52

Finding the Fourth Proportional to 120,281.40, 165,984.12 and 66,566.52

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Solution

The fourth proportional to 120,281.40, 165,984.12 and 66,566.52 is: 91,859.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,281.40 : 165,984.12 = 66,566.52 : x
  2. Step 2: Convert to fraction form
    120,281.40/165,984.12 = 66,566.52/x
  3. Step 3: Cross multiply
    120,281.40x = 165,984.12 × 66,566.52
  4. Step 4: Simplify right side
    120,281.40x = 11,048,985,243.66
  5. Step 5: Solve for x
    x = 11,048,985,243.66/120,281.40
  6. Step 6: Final answer
    x = 91,859.47

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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.