Home / 142,206.48-213,260.49-79,122.51

Finding the Fourth Proportional to 142,206.48, 213,260.49 and 79,122.51

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Solution

The fourth proportional to 142,206.48, 213,260.49 and 79,122.51 is: 118,656.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,206.48 : 213,260.49 = 79,122.51 : x
  2. Step 2: Convert to fraction form
    142,206.48/213,260.49 = 79,122.51/x
  3. Step 3: Cross multiply
    142,206.48x = 213,260.49 × 79,122.51
  4. Step 4: Simplify right side
    142,206.48x = 16,873,705,252.63
  5. Step 5: Solve for x
    x = 16,873,705,252.63/142,206.48
  6. Step 6: Final answer
    x = 118,656.37

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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.