Home / 144,865.70-199,927-81,215.80

Finding the Fourth Proportional to 144,865.70, 199,927 and 81,215.80

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Solution

The fourth proportional to 144,865.70, 199,927 and 81,215.80 is: 112,084.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,865.70 : 199,927 = 81,215.80 : x
  2. Step 2: Convert to fraction form
    144,865.70/199,927 = 81,215.80/x
  3. Step 3: Cross multiply
    144,865.70x = 199,927 × 81,215.80
  4. Step 4: Simplify right side
    144,865.70x = 16,237,231,246.60
  5. Step 5: Solve for x
    x = 16,237,231,246.60/144,865.70
  6. Step 6: Final answer
    x = 112,084.72

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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.