Home / 120,785.21-166,698.97-73,038.90

Finding the Fourth Proportional to 120,785.21, 166,698.97 and 73,038.90

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Solution

The fourth proportional to 120,785.21, 166,698.97 and 73,038.90 is: 100,802.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,785.21 : 166,698.97 = 73,038.90 : x
  2. Step 2: Convert to fraction form
    120,785.21/166,698.97 = 73,038.90/x
  3. Step 3: Cross multiply
    120,785.21x = 166,698.97 × 73,038.90
  4. Step 4: Simplify right side
    120,785.21x = 12,175,509,399.93
  5. Step 5: Solve for x
    x = 12,175,509,399.93/120,785.21
  6. Step 6: Final answer
    x = 100,802.98

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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.