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Finding the Fourth Proportional to 144,864.70, 199,925.62 and 81,214.80

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Solution

The fourth proportional to 144,864.70, 199,925.62 and 81,214.80 is: 112,083.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,864.70 : 199,925.62 = 81,214.80 : x
  2. Step 2: Convert to fraction form
    144,864.70/199,925.62 = 81,214.80/x
  3. Step 3: Cross multiply
    144,864.70x = 199,925.62 × 81,214.80
  4. Step 4: Simplify right side
    144,864.70x = 16,236,919,415.00
  5. Step 5: Solve for x
    x = 16,236,919,415.00/144,864.70
  6. Step 6: Final answer
    x = 112,083.34

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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.