Home / 133,108.94-183,689.18-72,679.30

Finding the Fourth Proportional to 133,108.94, 183,689.18 and 72,679.30

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Solution

The fourth proportional to 133,108.94, 183,689.18 and 72,679.30 is: 100,296.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,108.94 : 183,689.18 = 72,679.30 : x
  2. Step 2: Convert to fraction form
    133,108.94/183,689.18 = 72,679.30/x
  3. Step 3: Cross multiply
    133,108.94x = 183,689.18 × 72,679.30
  4. Step 4: Simplify right side
    133,108.94x = 13,350,401,019.97
  5. Step 5: Solve for x
    x = 13,350,401,019.97/133,108.94
  6. Step 6: Final answer
    x = 100,296.80

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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.