Home / 148,736.25-205,256.03-81,668.25

Finding the Fourth Proportional to 148,736.25, 205,256.03 and 81,668.25

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Solution

The fourth proportional to 148,736.25, 205,256.03 and 81,668.25 is: 112,702.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,736.25 : 205,256.03 = 81,668.25 : x
  2. Step 2: Convert to fraction form
    148,736.25/205,256.03 = 81,668.25/x
  3. Step 3: Cross multiply
    148,736.25x = 205,256.03 × 81,668.25
  4. Step 4: Simplify right side
    148,736.25x = 16,762,900,363.71
  5. Step 5: Solve for x
    x = 16,762,900,363.71/148,736.25
  6. Step 6: Final answer
    x = 112,702.19

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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.