Home / 142,110.41-196,112.40-78,448.25

Finding the Fourth Proportional to 142,110.41, 196,112.40 and 78,448.25

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Solution

The fourth proportional to 142,110.41, 196,112.40 and 78,448.25 is: 108,258.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,110.41 : 196,112.40 = 78,448.25 : x
  2. Step 2: Convert to fraction form
    142,110.41/196,112.40 = 78,448.25/x
  3. Step 3: Cross multiply
    142,110.41x = 196,112.40 × 78,448.25
  4. Step 4: Simplify right side
    142,110.41x = 15,384,674,583.30
  5. Step 5: Solve for x
    x = 15,384,674,583.30/142,110.41
  6. Step 6: Final answer
    x = 108,258.60

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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.