Home / 137,989.14-190,430.42-77,559.60

Finding the Fourth Proportional to 137,989.14, 190,430.42 and 77,559.60

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Solution

The fourth proportional to 137,989.14, 190,430.42 and 77,559.60 is: 107,035.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,989.14 : 190,430.42 = 77,559.60 : x
  2. Step 2: Convert to fraction form
    137,989.14/190,430.42 = 77,559.60/x
  3. Step 3: Cross multiply
    137,989.14x = 190,430.42 × 77,559.60
  4. Step 4: Simplify right side
    137,989.14x = 14,769,707,211.90
  5. Step 5: Solve for x
    x = 14,769,707,211.90/137,989.14
  6. Step 6: Final answer
    x = 107,035.28

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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.