Home / 149,259.87-205,971.75-81,276.57

Finding the Fourth Proportional to 149,259.87, 205,971.75 and 81,276.57

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Solution

The fourth proportional to 149,259.87, 205,971.75 and 81,276.57 is: 112,157.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,259.87 : 205,971.75 = 81,276.57 : x
  2. Step 2: Convert to fraction form
    149,259.87/205,971.75 = 81,276.57/x
  3. Step 3: Cross multiply
    149,259.87x = 205,971.75 × 81,276.57
  4. Step 4: Simplify right side
    149,259.87x = 16,740,677,356.90
  5. Step 5: Solve for x
    x = 16,740,677,356.90/149,259.87
  6. Step 6: Final answer
    x = 112,157.93

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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.