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Finding the Fourth Proportional to 91,361.82, 136,899.11 and 70,276.41

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Solution

The fourth proportional to 91,361.82, 136,899.11 and 70,276.41 is: 105,304.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,361.82 : 136,899.11 = 70,276.41 : x
  2. Step 2: Convert to fraction form
    91,361.82/136,899.11 = 70,276.41/x
  3. Step 3: Cross multiply
    91,361.82x = 136,899.11 × 70,276.41
  4. Step 4: Simplify right side
    91,361.82x = 9,620,778,158.69
  5. Step 5: Solve for x
    x = 9,620,778,158.69/91,361.82
  6. Step 6: Final answer
    x = 105,304.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.