Home / 138,739.41-191,460.86-75,077.19

Finding the Fourth Proportional to 138,739.41, 191,460.86 and 75,077.19

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Solution

The fourth proportional to 138,739.41, 191,460.86 and 75,077.19 is: 103,606.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,739.41 : 191,460.86 = 75,077.19 : x
  2. Step 2: Convert to fraction form
    138,739.41/191,460.86 = 75,077.19/x
  3. Step 3: Cross multiply
    138,739.41x = 191,460.86 × 75,077.19
  4. Step 4: Simplify right side
    138,739.41x = 14,374,343,363.78
  5. Step 5: Solve for x
    x = 14,374,343,363.78/138,739.41
  6. Step 6: Final answer
    x = 103,606.78

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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.