Home / 158,633.12-218,911.65-90,649.31

Finding the Fourth Proportional to 158,633.12, 218,911.65 and 90,649.31

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Solution

The fourth proportional to 158,633.12, 218,911.65 and 90,649.31 is: 125,094.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,633.12 : 218,911.65 = 90,649.31 : x
  2. Step 2: Convert to fraction form
    158,633.12/218,911.65 = 90,649.31/x
  3. Step 3: Cross multiply
    158,633.12x = 218,911.65 × 90,649.31
  4. Step 4: Simplify right side
    158,633.12x = 19,844,190,023.46
  5. Step 5: Solve for x
    x = 19,844,190,023.46/158,633.12
  6. Step 6: Final answer
    x = 125,094.87

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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.