Home / 137,912.50-190,321.77-76,664.44

Finding the Fourth Proportional to 137,912.50, 190,321.77 and 76,664.44

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Solution

The fourth proportional to 137,912.50, 190,321.77 and 76,664.44 is: 105,798.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,912.50 : 190,321.77 = 76,664.44 : x
  2. Step 2: Convert to fraction form
    137,912.50/190,321.77 = 76,664.44/x
  3. Step 3: Cross multiply
    137,912.50x = 190,321.77 × 76,664.44
  4. Step 4: Simplify right side
    137,912.50x = 14,590,911,916.86
  5. Step 5: Solve for x
    x = 14,590,911,916.86/137,912.50
  6. Step 6: Final answer
    x = 105,798.33

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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.