Home / 142,300.09-213,569.87-71,201.39

Finding the Fourth Proportional to 142,300.09, 213,569.87 and 71,201.39

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Solution

The fourth proportional to 142,300.09, 213,569.87 and 71,201.39 is: 106,862.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,300.09 : 213,569.87 = 71,201.39 : x
  2. Step 2: Convert to fraction form
    142,300.09/213,569.87 = 71,201.39/x
  3. Step 3: Cross multiply
    142,300.09x = 213,569.87 × 71,201.39
  4. Step 4: Simplify right side
    142,300.09x = 15,206,471,606.12
  5. Step 5: Solve for x
    x = 15,206,471,606.12/142,300.09
  6. Step 6: Final answer
    x = 106,862.00

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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.