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Finding the Fourth Proportional to 142,907.70, 197,209.17 and 79,246.02

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Solution

The fourth proportional to 142,907.70, 197,209.17 and 79,246.02 is: 109,357.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,907.70 : 197,209.17 = 79,246.02 : x
  2. Step 2: Convert to fraction form
    142,907.70/197,209.17 = 79,246.02/x
  3. Step 3: Cross multiply
    142,907.70x = 197,209.17 × 79,246.02
  4. Step 4: Simplify right side
    142,907.70x = 15,628,041,830.00
  5. Step 5: Solve for x
    x = 15,628,041,830.00/142,907.70
  6. Step 6: Final answer
    x = 109,357.59

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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.