Home / 130,670.30-196,070.25-51,782.78

Finding the Fourth Proportional to 130,670.30, 196,070.25 and 51,782.78

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Solution

The fourth proportional to 130,670.30, 196,070.25 and 51,782.78 is: 77,699.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,670.30 : 196,070.25 = 51,782.78 : x
  2. Step 2: Convert to fraction form
    130,670.30/196,070.25 = 51,782.78/x
  3. Step 3: Cross multiply
    130,670.30x = 196,070.25 × 51,782.78
  4. Step 4: Simplify right side
    130,670.30x = 10,153,062,620.30
  5. Step 5: Solve for x
    x = 10,153,062,620.30/130,670.30
  6. Step 6: Final answer
    x = 77,699.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.