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Finding the Fourth Proportional to 149,035.46, 205,670.32 and 81,053.08

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Solution

The fourth proportional to 149,035.46, 205,670.32 and 81,053.08 is: 111,854.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,035.46 : 205,670.32 = 81,053.08 : x
  2. Step 2: Convert to fraction form
    149,035.46/205,670.32 = 81,053.08/x
  3. Step 3: Cross multiply
    149,035.46x = 205,670.32 × 81,053.08
  4. Step 4: Simplify right side
    149,035.46x = 16,670,212,900.59
  5. Step 5: Solve for x
    x = 16,670,212,900.59/149,035.46
  6. Step 6: Final answer
    x = 111,854.00

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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.