Home / 144,914.48-199,991.68-81,256.40

Finding the Fourth Proportional to 144,914.48, 199,991.68 and 81,256.40

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Solution

The fourth proportional to 144,914.48, 199,991.68 and 81,256.40 is: 112,139.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,914.48 : 199,991.68 = 81,256.40 : x
  2. Step 2: Convert to fraction form
    144,914.48/199,991.68 = 81,256.40/x
  3. Step 3: Cross multiply
    144,914.48x = 199,991.68 × 81,256.40
  4. Step 4: Simplify right side
    144,914.48x = 16,250,603,946.75
  5. Step 5: Solve for x
    x = 16,250,603,946.75/144,914.48
  6. Step 6: Final answer
    x = 112,139.27

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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.