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Finding the Fourth Proportional to 245,955.83, 368,972.58 and 86,076.41

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Solution

The fourth proportional to 245,955.83, 368,972.58 and 86,076.41 is: 129,128.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,955.83 : 368,972.58 = 86,076.41 : x
  2. Step 2: Convert to fraction form
    245,955.83/368,972.58 = 86,076.41/x
  3. Step 3: Cross multiply
    245,955.83x = 368,972.58 × 86,076.41
  4. Step 4: Simplify right side
    245,955.83x = 31,759,835,074.84
  5. Step 5: Solve for x
    x = 31,759,835,074.84/245,955.83
  6. Step 6: Final answer
    x = 129,128.21

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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.