Home / 137,721.63-190,056.87-77,293.62

Finding the Fourth Proportional to 137,721.63, 190,056.87 and 77,293.62

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Solution

The fourth proportional to 137,721.63, 190,056.87 and 77,293.62 is: 106,665.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,721.63 : 190,056.87 = 77,293.62 : x
  2. Step 2: Convert to fraction form
    137,721.63/190,056.87 = 77,293.62/x
  3. Step 3: Cross multiply
    137,721.63x = 190,056.87 × 77,293.62
  4. Step 4: Simplify right side
    137,721.63x = 14,690,183,488.17
  5. Step 5: Solve for x
    x = 14,690,183,488.17/137,721.63
  6. Step 6: Final answer
    x = 106,665.77

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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.