Home / 133,123.50-183,711.93-72,694.86

Finding the Fourth Proportional to 133,123.50, 183,711.93 and 72,694.86

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Solution

The fourth proportional to 133,123.50, 183,711.93 and 72,694.86 is: 100,319.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,123.50 : 183,711.93 = 72,694.86 : x
  2. Step 2: Convert to fraction form
    133,123.50/183,711.93 = 72,694.86/x
  3. Step 3: Cross multiply
    133,123.50x = 183,711.93 × 72,694.86
  4. Step 4: Simplify right side
    133,123.50x = 13,354,913,031.68
  5. Step 5: Solve for x
    x = 13,354,913,031.68/133,123.50
  6. Step 6: Final answer
    x = 100,319.73

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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.