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Finding the Fourth Proportional to 91,817.82, 137,440.51 and 70,703.01

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Solution

The fourth proportional to 91,817.82, 137,440.51 and 70,703.01 is: 105,834.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,817.82 : 137,440.51 = 70,703.01 : x
  2. Step 2: Convert to fraction form
    91,817.82/137,440.51 = 70,703.01/x
  3. Step 3: Cross multiply
    91,817.82x = 137,440.51 × 70,703.01
  4. Step 4: Simplify right side
    91,817.82x = 9,717,457,576.18
  5. Step 5: Solve for x
    x = 9,717,457,576.18/91,817.82
  6. Step 6: Final answer
    x = 105,834.11

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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.