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Finding the Fourth Proportional to 133,061.40, 199,620.90 and 39,576.60

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Solution

The fourth proportional to 133,061.40, 199,620.90 and 39,576.60 is: 59,373.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,061.40 : 199,620.90 = 39,576.60 : x
  2. Step 2: Convert to fraction form
    133,061.40/199,620.90 = 39,576.60/x
  3. Step 3: Cross multiply
    133,061.40x = 199,620.90 × 39,576.60
  4. Step 4: Simplify right side
    133,061.40x = 7,900,316,510.94
  5. Step 5: Solve for x
    x = 7,900,316,510.94/133,061.40
  6. Step 6: Final answer
    x = 59,373.47

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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.