Home / 158,063.36-218,119.38-86,429.48

Finding the Fourth Proportional to 158,063.36, 218,119.38 and 86,429.48

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Solution

The fourth proportional to 158,063.36, 218,119.38 and 86,429.48 is: 119,268.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,063.36 : 218,119.38 = 86,429.48 : x
  2. Step 2: Convert to fraction form
    158,063.36/218,119.38 = 86,429.48/x
  3. Step 3: Cross multiply
    158,063.36x = 218,119.38 × 86,429.48
  4. Step 4: Simplify right side
    158,063.36x = 18,851,944,591.32
  5. Step 5: Solve for x
    x = 18,851,944,591.32/158,063.36
  6. Step 6: Final answer
    x = 119,268.28

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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.