Home / 133,114.94-183,706.10-72,691.20

Finding the Fourth Proportional to 133,114.94, 183,706.10 and 72,691.20

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Solution

The fourth proportional to 133,114.94, 183,706.10 and 72,691.20 is: 100,317.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,114.94 : 183,706.10 = 72,691.20 : x
  2. Step 2: Convert to fraction form
    133,114.94/183,706.10 = 72,691.20/x
  3. Step 3: Cross multiply
    133,114.94x = 183,706.10 × 72,691.20
  4. Step 4: Simplify right side
    133,114.94x = 13,353,816,856.32
  5. Step 5: Solve for x
    x = 13,353,816,856.32/133,114.94
  6. Step 6: Final answer
    x = 100,317.94

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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.