Home / 105,708.87-158,258.61-70,205.63

Finding the Fourth Proportional to 105,708.87, 158,258.61 and 70,205.63

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Solution

The fourth proportional to 105,708.87, 158,258.61 and 70,205.63 is: 105,106.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,708.87 : 158,258.61 = 70,205.63 : x
  2. Step 2: Convert to fraction form
    105,708.87/158,258.61 = 70,205.63/x
  3. Step 3: Cross multiply
    105,708.87x = 158,258.61 × 70,205.63
  4. Step 4: Simplify right side
    105,708.87x = 11,110,644,626.68
  5. Step 5: Solve for x
    x = 11,110,644,626.68/105,708.87
  6. Step 6: Final answer
    x = 105,106.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.