Home / 158,051.26-218,110.71-86,431.33

Finding the Fourth Proportional to 158,051.26, 218,110.71 and 86,431.33

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Solution

The fourth proportional to 158,051.26, 218,110.71 and 86,431.33 is: 119,275.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,051.26 : 218,110.71 = 86,431.33 : x
  2. Step 2: Convert to fraction form
    158,051.26/218,110.71 = 86,431.33/x
  3. Step 3: Cross multiply
    158,051.26x = 218,110.71 × 86,431.33
  4. Step 4: Simplify right side
    158,051.26x = 18,851,598,752.54
  5. Step 5: Solve for x
    x = 18,851,598,752.54/158,051.26
  6. Step 6: Final answer
    x = 119,275.22

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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.