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Finding the Fourth Proportional to 133,281.67, 183,923.62 and 72,851.80

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Solution

The fourth proportional to 133,281.67, 183,923.62 and 72,851.80 is: 100,532.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,281.67 : 183,923.62 = 72,851.80 : x
  2. Step 2: Convert to fraction form
    133,281.67/183,923.62 = 72,851.80/x
  3. Step 3: Cross multiply
    133,281.67x = 183,923.62 × 72,851.80
  4. Step 4: Simplify right side
    133,281.67x = 13,399,166,779.52
  5. Step 5: Solve for x
    x = 13,399,166,779.52/133,281.67
  6. Step 6: Final answer
    x = 100,532.70

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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.