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Finding the Fourth Proportional to 133,330.47, 183,988.53 and 72,889.89

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Solution

The fourth proportional to 133,330.47, 183,988.53 and 72,889.89 is: 100,583.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,330.47 : 183,988.53 = 72,889.89 : x
  2. Step 2: Convert to fraction form
    133,330.47/183,988.53 = 72,889.89/x
  3. Step 3: Cross multiply
    133,330.47x = 183,988.53 × 72,889.89
  4. Step 4: Simplify right side
    133,330.47x = 13,410,903,712.96
  5. Step 5: Solve for x
    x = 13,410,903,712.96/133,330.47
  6. Step 6: Final answer
    x = 100,583.94

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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.