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Finding the Fourth Proportional to 130,114.88, 195,186.72 and 51,218.72

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Solution

The fourth proportional to 130,114.88, 195,186.72 and 51,218.72 is: 76,833.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,114.88 : 195,186.72 = 51,218.72 : x
  2. Step 2: Convert to fraction form
    130,114.88/195,186.72 = 51,218.72/x
  3. Step 3: Cross multiply
    130,114.88x = 195,186.72 × 51,218.72
  4. Step 4: Simplify right side
    130,114.88x = 9,997,213,959.40
  5. Step 5: Solve for x
    x = 9,997,213,959.40/130,114.88
  6. Step 6: Final answer
    x = 76,833.75

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1.5x scale

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.