Home / 149,085.16-205,733.79-85,418.86

Finding the Fourth Proportional to 149,085.16, 205,733.79 and 85,418.86

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Solution

The fourth proportional to 149,085.16, 205,733.79 and 85,418.86 is: 117,875.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,085.16 : 205,733.79 = 85,418.86 : x
  2. Step 2: Convert to fraction form
    149,085.16/205,733.79 = 85,418.86/x
  3. Step 3: Cross multiply
    149,085.16x = 205,733.79 × 85,418.86
  4. Step 4: Simplify right side
    149,085.16x = 17,573,545,805.28
  5. Step 5: Solve for x
    x = 17,573,545,805.28/149,085.16
  6. Step 6: Final answer
    x = 117,875.89

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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.