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Finding the Fourth Proportional to 158,335.83, 218,449.24 and 90,303.91

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Solution

The fourth proportional to 158,335.83, 218,449.24 and 90,303.91 is: 124,588.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,335.83 : 218,449.24 = 90,303.91 : x
  2. Step 2: Convert to fraction form
    158,335.83/218,449.24 = 90,303.91/x
  3. Step 3: Cross multiply
    158,335.83x = 218,449.24 × 90,303.91
  4. Step 4: Simplify right side
    158,335.83x = 19,726,819,736.65
  5. Step 5: Solve for x
    x = 19,726,819,736.65/158,335.83
  6. Step 6: Final answer
    x = 124,588.48

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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.