Home / 133,197.72-183,812.16-72,771.81

Finding the Fourth Proportional to 133,197.72, 183,812.16 and 72,771.81

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Solution

The fourth proportional to 133,197.72, 183,812.16 and 72,771.81 is: 100,424.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,197.72 : 183,812.16 = 72,771.81 : x
  2. Step 2: Convert to fraction form
    133,197.72/183,812.16 = 72,771.81/x
  3. Step 3: Cross multiply
    133,197.72x = 183,812.16 × 72,771.81
  4. Step 4: Simplify right side
    133,197.72x = 13,376,343,583.21
  5. Step 5: Solve for x
    x = 13,376,343,583.21/133,197.72
  6. Step 6: Final answer
    x = 100,424.72

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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.