Home / 158,273.76-218,435.40-90,307.56

Finding the Fourth Proportional to 158,273.76, 218,435.40 and 90,307.56

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Solution

The fourth proportional to 158,273.76, 218,435.40 and 90,307.56 is: 124,634.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,273.76 : 218,435.40 = 90,307.56 : x
  2. Step 2: Convert to fraction form
    158,273.76/218,435.40 = 90,307.56/x
  3. Step 3: Cross multiply
    158,273.76x = 218,435.40 × 90,307.56
  4. Step 4: Simplify right side
    158,273.76x = 19,726,367,991.62
  5. Step 5: Solve for x
    x = 19,726,367,991.62/158,273.76
  6. Step 6: Final answer
    x = 124,634.48

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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.