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Finding the Fourth Proportional to 133,248.88, 183,756.29 and 87,239.87

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Solution

The fourth proportional to 133,248.88, 183,756.29 and 87,239.87 is: 120,307.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,248.88 : 183,756.29 = 87,239.87 : x
  2. Step 2: Convert to fraction form
    133,248.88/183,756.29 = 87,239.87/x
  3. Step 3: Cross multiply
    133,248.88x = 183,756.29 × 87,239.87
  4. Step 4: Simplify right side
    133,248.88x = 16,030,874,185.39
  5. Step 5: Solve for x
    x = 16,030,874,185.39/133,248.88
  6. Step 6: Final answer
    x = 120,307.76

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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.