Home / 155,104.30-213,989.41-101,420.74

Finding the Fourth Proportional to 155,104.30, 213,989.41 and 101,420.74

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Solution

The fourth proportional to 155,104.30, 213,989.41 and 101,420.74 is: 139,924.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,104.30 : 213,989.41 = 101,420.74 : x
  2. Step 2: Convert to fraction form
    155,104.30/213,989.41 = 101,420.74/x
  3. Step 3: Cross multiply
    155,104.30x = 213,989.41 × 101,420.74
  4. Step 4: Simplify right side
    155,104.30x = 21,702,964,314.36
  5. Step 5: Solve for x
    x = 21,702,964,314.36/155,104.30
  6. Step 6: Final answer
    x = 139,924.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.