Home / 137,979.04-190,405.74-77,552.20

Finding the Fourth Proportional to 137,979.04, 190,405.74 and 77,552.20

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Solution

The fourth proportional to 137,979.04, 190,405.74 and 77,552.20 is: 107,019.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,979.04 : 190,405.74 = 77,552.20 : x
  2. Step 2: Convert to fraction form
    137,979.04/190,405.74 = 77,552.20/x
  3. Step 3: Cross multiply
    137,979.04x = 190,405.74 × 77,552.20
  4. Step 4: Simplify right side
    137,979.04x = 14,766,384,029.63
  5. Step 5: Solve for x
    x = 14,766,384,029.63/137,979.04
  6. Step 6: Final answer
    x = 107,019.04

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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.