Home / 138,035.88-190,485.27-77,605.02

Finding the Fourth Proportional to 138,035.88, 190,485.27 and 77,605.02

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Solution

The fourth proportional to 138,035.88, 190,485.27 and 77,605.02 is: 107,092.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,035.88 : 190,485.27 = 77,605.02 : x
  2. Step 2: Convert to fraction form
    138,035.88/190,485.27 = 77,605.02/x
  3. Step 3: Cross multiply
    138,035.88x = 190,485.27 × 77,605.02
  4. Step 4: Simplify right side
    138,035.88x = 14,782,613,188.06
  5. Step 5: Solve for x
    x = 14,782,613,188.06/138,035.88
  6. Step 6: Final answer
    x = 107,092.54

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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.