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Finding the Fourth Proportional to 108,698.25, 149,927.70 and 105,040.50

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Solution

The fourth proportional to 108,698.25, 149,927.70 and 105,040.50 is: 144,882.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,698.25 : 149,927.70 = 105,040.50 : x
  2. Step 2: Convert to fraction form
    108,698.25/149,927.70 = 105,040.50/x
  3. Step 3: Cross multiply
    108,698.25x = 149,927.70 × 105,040.50
  4. Step 4: Simplify right side
    108,698.25x = 15,748,479,664.96
  5. Step 5: Solve for x
    x = 15,748,479,664.96/108,698.25
  6. Step 6: Final answer
    x = 144,882.55

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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.