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Finding the Fourth Proportional to 130,643,999.70, 195,965,999.55 and 130,643,999.70

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Solution

The fourth proportional to 130,643,999.70, 195,965,999.55 and 130,643,999.70 is: 195,965,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,643,999.70 : 195,965,999.55 = 130,643,999.70 : x
  2. Step 2: Convert to fraction form
    130,643,999.70/195,965,999.55 = 130,643,999.70/x
  3. Step 3: Cross multiply
    130,643,999.70x = 195,965,999.55 × 130,643,999.70
  4. Step 4: Simplify right side
    130,643,999.70x = 25,601,781,986,420,404
  5. Step 5: Solve for x
    x = 25,601,781,986,420,404/130,643,999.70
  6. Step 6: Final answer
    x = 195,965,999.55

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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.