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Finding the Fourth Proportional to 139,035, 191,867.16 and 75,371.16

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Solution

The fourth proportional to 139,035, 191,867.16 and 75,371.16 is: 104,011.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,035 : 191,867.16 = 75,371.16 : x
  2. Step 2: Convert to fraction form
    139,035/191,867.16 = 75,371.16/x
  3. Step 3: Cross multiply
    139,035x = 191,867.16 × 75,371.16
  4. Step 4: Simplify right side
    139,035x = 14,461,250,415.11
  5. Step 5: Solve for x
    x = 14,461,250,415.11/139,035
  6. Step 6: Final answer
    x = 104,011.58

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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.