Home / 144,818.10-199,838.07-81,143.60

Finding the Fourth Proportional to 144,818.10, 199,838.07 and 81,143.60

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Solution

The fourth proportional to 144,818.10, 199,838.07 and 81,143.60 is: 111,972.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,818.10 : 199,838.07 = 81,143.60 : x
  2. Step 2: Convert to fraction form
    144,818.10/199,838.07 = 81,143.60/x
  3. Step 3: Cross multiply
    144,818.10x = 199,838.07 × 81,143.60
  4. Step 4: Simplify right side
    144,818.10x = 16,215,579,417.66
  5. Step 5: Solve for x
    x = 16,215,579,417.66/144,818.10
  6. Step 6: Final answer
    x = 111,972.05

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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.