Home / 138,165.55-190,667.67-77,736.61

Finding the Fourth Proportional to 138,165.55, 190,667.67 and 77,736.61

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Solution

The fourth proportional to 138,165.55, 190,667.67 and 77,736.61 is: 107,276.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,165.55 : 190,667.67 = 77,736.61 : x
  2. Step 2: Convert to fraction form
    138,165.55/190,667.67 = 77,736.61/x
  3. Step 3: Cross multiply
    138,165.55x = 190,667.67 × 77,736.61
  4. Step 4: Simplify right side
    138,165.55x = 14,821,858,686.49
  5. Step 5: Solve for x
    x = 14,821,858,686.49/138,165.55
  6. Step 6: Final answer
    x = 107,276.08

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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.