Home / 158,533.19-218,763.66-90,540.78

Finding the Fourth Proportional to 158,533.19, 218,763.66 and 90,540.78

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Solution

The fourth proportional to 158,533.19, 218,763.66 and 90,540.78 is: 124,939.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,533.19 : 218,763.66 = 90,540.78 : x
  2. Step 2: Convert to fraction form
    158,533.19/218,763.66 = 90,540.78/x
  3. Step 3: Cross multiply
    158,533.19x = 218,763.66 × 90,540.78
  4. Step 4: Simplify right side
    158,533.19x = 19,807,032,751.58
  5. Step 5: Solve for x
    x = 19,807,032,751.58/158,533.19
  6. Step 6: Final answer
    x = 124,939.34

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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.