Home / 100,390.08-138,518.46-59,546.64

Finding the Fourth Proportional to 100,390.08, 138,518.46 and 59,546.64

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Solution

The fourth proportional to 100,390.08, 138,518.46 and 59,546.64 is: 82,162.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,390.08 : 138,518.46 = 59,546.64 : x
  2. Step 2: Convert to fraction form
    100,390.08/138,518.46 = 59,546.64/x
  3. Step 3: Cross multiply
    100,390.08x = 138,518.46 × 59,546.64
  4. Step 4: Simplify right side
    100,390.08x = 8,248,308,870.97
  5. Step 5: Solve for x
    x = 8,248,308,870.97/100,390.08
  6. Step 6: Final answer
    x = 82,162.59

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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.