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Finding the Fourth Proportional to 144,888.48, 199,955.70 and 81,230.40

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Solution

The fourth proportional to 144,888.48, 199,955.70 and 81,230.40 is: 112,103.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,888.48 : 199,955.70 = 81,230.40 : x
  2. Step 2: Convert to fraction form
    144,888.48/199,955.70 = 81,230.40/x
  3. Step 3: Cross multiply
    144,888.48x = 199,955.70 × 81,230.40
  4. Step 4: Simplify right side
    144,888.48x = 16,242,481,493.28
  5. Step 5: Solve for x
    x = 16,242,481,493.28/144,888.48
  6. Step 6: Final answer
    x = 112,103.33

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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.