Home / 138,655.75-191,344.26-74,992.18

Finding the Fourth Proportional to 138,655.75, 191,344.26 and 74,992.18

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Solution

The fourth proportional to 138,655.75, 191,344.26 and 74,992.18 is: 103,488.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,655.75 : 191,344.26 = 74,992.18 : x
  2. Step 2: Convert to fraction form
    138,655.75/191,344.26 = 74,992.18/x
  3. Step 3: Cross multiply
    138,655.75x = 191,344.26 × 74,992.18
  4. Step 4: Simplify right side
    138,655.75x = 14,349,323,187.89
  5. Step 5: Solve for x
    x = 14,349,323,187.89/138,655.75
  6. Step 6: Final answer
    x = 103,488.84

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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.