Home / 136,490.58-188,256.75-90,467.00

Finding the Fourth Proportional to 136,490.58, 188,256.75 and 90,467.00

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Solution

The fourth proportional to 136,490.58, 188,256.75 and 90,467.00 is: 124,778.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,490.58 : 188,256.75 = 90,467.00 : x
  2. Step 2: Convert to fraction form
    136,490.58/188,256.75 = 90,467.00/x
  3. Step 3: Cross multiply
    136,490.58x = 188,256.75 × 90,467.00
  4. Step 4: Simplify right side
    136,490.58x = 17,031,022,460.97
  5. Step 5: Solve for x
    x = 17,031,022,460.97/136,490.58
  6. Step 6: Final answer
    x = 124,778.01

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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.