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Finding the Fourth Proportional to 144,798.66, 199,830.15 and 81,156.90

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Solution

The fourth proportional to 144,798.66, 199,830.15 and 81,156.90 is: 112,001.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,798.66 : 199,830.15 = 81,156.90 : x
  2. Step 2: Convert to fraction form
    144,798.66/199,830.15 = 81,156.90/x
  3. Step 3: Cross multiply
    144,798.66x = 199,830.15 × 81,156.90
  4. Step 4: Simplify right side
    144,798.66x = 16,217,595,500.54
  5. Step 5: Solve for x
    x = 16,217,595,500.54/144,798.66
  6. Step 6: Final answer
    x = 112,001.01

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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.