Home / 133,391.08-183,899.55-85,561.39

Finding the Fourth Proportional to 133,391.08, 183,899.55 and 85,561.39

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Solution

The fourth proportional to 133,391.08, 183,899.55 and 85,561.39 is: 117,959.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,391.08 : 183,899.55 = 85,561.39 : x
  2. Step 2: Convert to fraction form
    133,391.08/183,899.55 = 85,561.39/x
  3. Step 3: Cross multiply
    133,391.08x = 183,899.55 × 85,561.39
  4. Step 4: Simplify right side
    133,391.08x = 15,734,701,118.37
  5. Step 5: Solve for x
    x = 15,734,701,118.37/133,391.08
  6. Step 6: Final answer
    x = 117,959.17

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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.