Home / 140,308.30-193,629.70-76,650.20

Finding the Fourth Proportional to 140,308.30, 193,629.70 and 76,650.20

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Solution

The fourth proportional to 140,308.30, 193,629.70 and 76,650.20 is: 105,779.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,308.30 : 193,629.70 = 76,650.20 : x
  2. Step 2: Convert to fraction form
    140,308.30/193,629.70 = 76,650.20/x
  3. Step 3: Cross multiply
    140,308.30x = 193,629.70 × 76,650.20
  4. Step 4: Simplify right side
    140,308.30x = 14,841,755,230.94
  5. Step 5: Solve for x
    x = 14,841,755,230.94/140,308.30
  6. Step 6: Final answer
    x = 105,779.60

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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.