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Finding the Fourth Proportional to 144,030.21, 198,797.28 and 87,488.97

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Solution

The fourth proportional to 144,030.21, 198,797.28 and 87,488.97 is: 120,756.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,030.21 : 198,797.28 = 87,488.97 : x
  2. Step 2: Convert to fraction form
    144,030.21/198,797.28 = 87,488.97/x
  3. Step 3: Cross multiply
    144,030.21x = 198,797.28 × 87,488.97
  4. Step 4: Simplify right side
    144,030.21x = 17,392,569,266.00
  5. Step 5: Solve for x
    x = 17,392,569,266.00/144,030.21
  6. Step 6: Final answer
    x = 120,756.40

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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.