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Finding the Fourth Proportional to 139,063.08, 191,907.16 and 75,401.12

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Solution

The fourth proportional to 139,063.08, 191,907.16 and 75,401.12 is: 104,053.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,063.08 : 191,907.16 = 75,401.12 : x
  2. Step 2: Convert to fraction form
    139,063.08/191,907.16 = 75,401.12/x
  3. Step 3: Cross multiply
    139,063.08x = 191,907.16 × 75,401.12
  4. Step 4: Simplify right side
    139,063.08x = 14,470,014,800.02
  5. Step 5: Solve for x
    x = 14,470,014,800.02/139,063.08
  6. Step 6: Final answer
    x = 104,053.61

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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.