Home / 138,019.14-190,466.44-77,589.90

Finding the Fourth Proportional to 138,019.14, 190,466.44 and 77,589.90

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Solution

The fourth proportional to 138,019.14, 190,466.44 and 77,589.90 is: 107,074.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,019.14 : 190,466.44 = 77,589.90 : x
  2. Step 2: Convert to fraction form
    138,019.14/190,466.44 = 77,589.90/x
  3. Step 3: Cross multiply
    138,019.14x = 190,466.44 × 77,589.90
  4. Step 4: Simplify right side
    138,019.14x = 14,778,271,838.98
  5. Step 5: Solve for x
    x = 14,778,271,838.98/138,019.14
  6. Step 6: Final answer
    x = 107,074.08

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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.