Home / 137,934.87-190,344.05-80,579.51

Finding the Fourth Proportional to 137,934.87, 190,344.05 and 80,579.51

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Solution

The fourth proportional to 137,934.87, 190,344.05 and 80,579.51 is: 111,196.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,934.87 : 190,344.05 = 80,579.51 : x
  2. Step 2: Convert to fraction form
    137,934.87/190,344.05 = 80,579.51/x
  3. Step 3: Cross multiply
    137,934.87x = 190,344.05 × 80,579.51
  4. Step 4: Simplify right side
    137,934.87x = 15,337,828,925.80
  5. Step 5: Solve for x
    x = 15,337,828,925.80/137,934.87
  6. Step 6: Final answer
    x = 111,196.17

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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.