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Finding the Fourth Proportional to 132,803.55, 183,263.52 and 72,372.87

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Solution

The fourth proportional to 132,803.55, 183,263.52 and 72,372.87 is: 99,871.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,803.55 : 183,263.52 = 72,372.87 : x
  2. Step 2: Convert to fraction form
    132,803.55/183,263.52 = 72,372.87/x
  3. Step 3: Cross multiply
    132,803.55x = 183,263.52 × 72,372.87
  4. Step 4: Simplify right side
    132,803.55x = 13,263,306,908.70
  5. Step 5: Solve for x
    x = 13,263,306,908.70/132,803.55
  6. Step 6: Final answer
    x = 99,871.63

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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.