Home / 142,123.47-213,072.74-53,367.09

Finding the Fourth Proportional to 142,123.47, 213,072.74 and 53,367.09

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Solution

The fourth proportional to 142,123.47, 213,072.74 and 53,367.09 is: 80,008.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,123.47 : 213,072.74 = 53,367.09 : x
  2. Step 2: Convert to fraction form
    142,123.47/213,072.74 = 53,367.09/x
  3. Step 3: Cross multiply
    142,123.47x = 213,072.74 × 53,367.09
  4. Step 4: Simplify right side
    142,123.47x = 11,371,072,092.13
  5. Step 5: Solve for x
    x = 11,371,072,092.13/142,123.47
  6. Step 6: Final answer
    x = 80,008.40

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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.