Home / 104,571.19-156,840.31-86,915.22

Finding the Fourth Proportional to 104,571.19, 156,840.31 and 86,915.22

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Solution

The fourth proportional to 104,571.19, 156,840.31 and 86,915.22 is: 130,359.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,571.19 : 156,840.31 = 86,915.22 : x
  2. Step 2: Convert to fraction form
    104,571.19/156,840.31 = 86,915.22/x
  3. Step 3: Cross multiply
    104,571.19x = 156,840.31 × 86,915.22
  4. Step 4: Simplify right side
    104,571.19x = 13,631,810,048.52
  5. Step 5: Solve for x
    x = 13,631,810,048.52/104,571.19
  6. Step 6: Final answer
    x = 130,359.14

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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.