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Finding the Fourth Proportional to 86,231,523.70, 129,347,285.55 and 86,231,523.70

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Solution

The fourth proportional to 86,231,523.70, 129,347,285.55 and 86,231,523.70 is: 129,347,285.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,231,523.70 : 129,347,285.55 = 86,231,523.70 : x
  2. Step 2: Convert to fraction form
    86,231,523.70/129,347,285.55 = 86,231,523.70/x
  3. Step 3: Cross multiply
    86,231,523.70x = 129,347,285.55 × 86,231,523.70
  4. Step 4: Simplify right side
    86,231,523.70x = 11,153,813,519,435,492
  5. Step 5: Solve for x
    x = 11,153,813,519,435,492/86,231,523.70
  6. Step 6: Final answer
    x = 129,347,285.55

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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.