Home / 138,119.61-190,603.22-77,690.27

Finding the Fourth Proportional to 138,119.61, 190,603.22 and 77,690.27

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Solution

The fourth proportional to 138,119.61, 190,603.22 and 77,690.27 is: 107,211.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,119.61 : 190,603.22 = 77,690.27 : x
  2. Step 2: Convert to fraction form
    138,119.61/190,603.22 = 77,690.27/x
  3. Step 3: Cross multiply
    138,119.61x = 190,603.22 × 77,690.27
  4. Step 4: Simplify right side
    138,119.61x = 14,808,014,283.20
  5. Step 5: Solve for x
    x = 14,808,014,283.20/138,119.61
  6. Step 6: Final answer
    x = 107,211.53

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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.