Home / 142,813.06-212,942.80-138,889.54

Finding the Fourth Proportional to 142,813.06, 212,942.80 and 138,889.54

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Solution

The fourth proportional to 142,813.06, 212,942.80 and 138,889.54 is: 207,092.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,813.06 : 212,942.80 = 138,889.54 : x
  2. Step 2: Convert to fraction form
    142,813.06/212,942.80 = 138,889.54/x
  3. Step 3: Cross multiply
    142,813.06x = 212,942.80 × 138,889.54
  4. Step 4: Simplify right side
    142,813.06x = 29,575,527,538.31
  5. Step 5: Solve for x
    x = 29,575,527,538.31/142,813.06
  6. Step 6: Final answer
    x = 207,092.60

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.