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Finding the Fourth Proportional to 86,532.60, 121,320.60 and 86,532.60

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Solution

The fourth proportional to 86,532.60, 121,320.60 and 86,532.60 is: 121,320.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,532.60 : 121,320.60 = 86,532.60 : x
  2. Step 2: Convert to fraction form
    86,532.60/121,320.60 = 86,532.60/x
  3. Step 3: Cross multiply
    86,532.60x = 121,320.60 × 86,532.60
  4. Step 4: Simplify right side
    86,532.60x = 10,498,186,951.56
  5. Step 5: Solve for x
    x = 10,498,186,951.56/86,532.60
  6. Step 6: Final answer
    x = 121,320.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.