Home / 138,653.77-191,342.19-74,991.55

Finding the Fourth Proportional to 138,653.77, 191,342.19 and 74,991.55

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Solution

The fourth proportional to 138,653.77, 191,342.19 and 74,991.55 is: 103,488.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,653.77 : 191,342.19 = 74,991.55 : x
  2. Step 2: Convert to fraction form
    138,653.77/191,342.19 = 74,991.55/x
  3. Step 3: Cross multiply
    138,653.77x = 191,342.19 × 74,991.55
  4. Step 4: Simplify right side
    138,653.77x = 14,349,047,408.49
  5. Step 5: Solve for x
    x = 14,349,047,408.49/138,653.77
  6. Step 6: Final answer
    x = 103,488.33

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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.