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Finding the Fourth Proportional to 169,915.51, 234,425.01 and 105,361.50

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Solution

The fourth proportional to 169,915.51, 234,425.01 and 105,361.50 is: 145,362.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,915.51 : 234,425.01 = 105,361.50 : x
  2. Step 2: Convert to fraction form
    169,915.51/234,425.01 = 105,361.50/x
  3. Step 3: Cross multiply
    169,915.51x = 234,425.01 × 105,361.50
  4. Step 4: Simplify right side
    169,915.51x = 24,699,370,691.12
  5. Step 5: Solve for x
    x = 24,699,370,691.12/169,915.51
  6. Step 6: Final answer
    x = 145,362.66

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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.