Home / 149,208.43-205,907.05-81,225.15

Finding the Fourth Proportional to 149,208.43, 205,907.05 and 81,225.15

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Solution

The fourth proportional to 149,208.43, 205,907.05 and 81,225.15 is: 112,090.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,208.43 : 205,907.05 = 81,225.15 : x
  2. Step 2: Convert to fraction form
    149,208.43/205,907.05 = 81,225.15/x
  3. Step 3: Cross multiply
    149,208.43x = 205,907.05 × 81,225.15
  4. Step 4: Simplify right side
    149,208.43x = 16,724,830,616.18
  5. Step 5: Solve for x
    x = 16,724,830,616.18/149,208.43
  6. Step 6: Final answer
    x = 112,090.39

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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.