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Finding the Fourth Proportional to 142,602.45, 213,903.09 and 35,986.65

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Solution

The fourth proportional to 142,602.45, 213,903.09 and 35,986.65 is: 53,979.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,602.45 : 213,903.09 = 35,986.65 : x
  2. Step 2: Convert to fraction form
    142,602.45/213,903.09 = 35,986.65/x
  3. Step 3: Cross multiply
    142,602.45x = 213,903.09 × 35,986.65
  4. Step 4: Simplify right side
    142,602.45x = 7,697,655,633.75
  5. Step 5: Solve for x
    x = 7,697,655,633.75/142,602.45
  6. Step 6: Final answer
    x = 53,979.83

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.