Home / 137,928.18-190,346.49-77,498.64

Finding the Fourth Proportional to 137,928.18, 190,346.49 and 77,498.64

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Solution

The fourth proportional to 137,928.18, 190,346.49 and 77,498.64 is: 106,951.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,928.18 : 190,346.49 = 77,498.64 : x
  2. Step 2: Convert to fraction form
    137,928.18/190,346.49 = 77,498.64/x
  3. Step 3: Cross multiply
    137,928.18x = 190,346.49 × 77,498.64
  4. Step 4: Simplify right side
    137,928.18x = 14,751,594,103.77
  5. Step 5: Solve for x
    x = 14,751,594,103.77/137,928.18
  6. Step 6: Final answer
    x = 106,951.27

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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.