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Finding the Fourth Proportional to 139,088.56, 191,942.26 and 75,426.34

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Solution

The fourth proportional to 139,088.56, 191,942.26 and 75,426.34 is: 104,088.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,088.56 : 191,942.26 = 75,426.34 : x
  2. Step 2: Convert to fraction form
    139,088.56/191,942.26 = 75,426.34/x
  3. Step 3: Cross multiply
    139,088.56x = 191,942.26 × 75,426.34
  4. Step 4: Simplify right side
    139,088.56x = 14,477,502,163.13
  5. Step 5: Solve for x
    x = 14,477,502,163.13/139,088.56
  6. Step 6: Final answer
    x = 104,088.37

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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.