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Finding the Fourth Proportional to 133,299.40, 183,953.54 and 72,870.76

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Solution

The fourth proportional to 133,299.40, 183,953.54 and 72,870.76 is: 100,561.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,299.40 : 183,953.54 = 72,870.76 : x
  2. Step 2: Convert to fraction form
    133,299.40/183,953.54 = 72,870.76/x
  3. Step 3: Cross multiply
    133,299.40x = 183,953.54 × 72,870.76
  4. Step 4: Simplify right side
    133,299.40x = 13,404,834,264.49
  5. Step 5: Solve for x
    x = 13,404,834,264.49/133,299.40
  6. Step 6: Final answer
    x = 100,561.85

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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.