Home / 142,299.89-196,377.91-77,772.71

Finding the Fourth Proportional to 142,299.89, 196,377.91 and 77,772.71

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Solution

The fourth proportional to 142,299.89, 196,377.91 and 77,772.71 is: 107,328.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,299.89 : 196,377.91 = 77,772.71 : x
  2. Step 2: Convert to fraction form
    142,299.89/196,377.91 = 77,772.71/x
  3. Step 3: Cross multiply
    142,299.89x = 196,377.91 × 77,772.71
  4. Step 4: Simplify right side
    142,299.89x = 15,272,841,948.71
  5. Step 5: Solve for x
    x = 15,272,841,948.71/142,299.89
  6. Step 6: Final answer
    x = 107,328.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.