Home / 149,365.36-206,128.44-85,714.48

Finding the Fourth Proportional to 149,365.36, 206,128.44 and 85,714.48

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Solution

The fourth proportional to 149,365.36, 206,128.44 and 85,714.48 is: 118,288.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,365.36 : 206,128.44 = 85,714.48 : x
  2. Step 2: Convert to fraction form
    149,365.36/206,128.44 = 85,714.48/x
  3. Step 3: Cross multiply
    149,365.36x = 206,128.44 × 85,714.48
  4. Step 4: Simplify right side
    149,365.36x = 17,668,192,047.81
  5. Step 5: Solve for x
    x = 17,668,192,047.81/149,365.36
  6. Step 6: Final answer
    x = 118,288.42

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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.