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Finding the Fourth Proportional to 185,354.90, 255,782.90 and 100,470.14

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Solution

The fourth proportional to 185,354.90, 255,782.90 and 100,470.14 is: 138,645.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,354.90 : 255,782.90 = 100,470.14 : x
  2. Step 2: Convert to fraction form
    185,354.90/255,782.90 = 100,470.14/x
  3. Step 3: Cross multiply
    185,354.90x = 255,782.90 × 100,470.14
  4. Step 4: Simplify right side
    185,354.90x = 25,698,541,991.34
  5. Step 5: Solve for x
    x = 25,698,541,991.34/185,354.90
  6. Step 6: Final answer
    x = 138,645.07

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1.5x scale

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.