Home / 138,185.96-190,697.45-77,757.62

Finding the Fourth Proportional to 138,185.96, 190,697.45 and 77,757.62

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Solution

The fourth proportional to 138,185.96, 190,697.45 and 77,757.62 is: 107,305.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,185.96 : 190,697.45 = 77,757.62 : x
  2. Step 2: Convert to fraction form
    138,185.96/190,697.45 = 77,757.62/x
  3. Step 3: Cross multiply
    138,185.96x = 190,697.45 × 77,757.62
  4. Step 4: Simplify right side
    138,185.96x = 14,828,178,509.79
  5. Step 5: Solve for x
    x = 14,828,178,509.79/138,185.96
  6. Step 6: Final answer
    x = 107,305.97

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1.5x scale

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.