Home / 133,242.34-183,872.18-72,811.66

Finding the Fourth Proportional to 133,242.34, 183,872.18 and 72,811.66

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Solution

The fourth proportional to 133,242.34, 183,872.18 and 72,811.66 is: 100,478.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,242.34 : 183,872.18 = 72,811.66 : x
  2. Step 2: Convert to fraction form
    133,242.34/183,872.18 = 72,811.66/x
  3. Step 3: Cross multiply
    133,242.34x = 183,872.18 × 72,811.66
  4. Step 4: Simplify right side
    133,242.34x = 13,388,038,653.62
  5. Step 5: Solve for x
    x = 13,388,038,653.62/133,242.34
  6. Step 6: Final answer
    x = 100,478.86

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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.