Home / 142,645.90-213,918.21-52,669.38

Finding the Fourth Proportional to 142,645.90, 213,918.21 and 52,669.38

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Solution

The fourth proportional to 142,645.90, 213,918.21 and 52,669.38 is: 78,985.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,645.90 : 213,918.21 = 52,669.38 : x
  2. Step 2: Convert to fraction form
    142,645.90/213,918.21 = 52,669.38/x
  3. Step 3: Cross multiply
    142,645.90x = 213,918.21 × 52,669.38
  4. Step 4: Simplify right side
    142,645.90x = 11,266,939,491.41
  5. Step 5: Solve for x
    x = 11,266,939,491.41/142,645.90
  6. Step 6: Final answer
    x = 78,985.37

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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.