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Finding the Fourth Proportional to 139,015.16, 191,840.73 and 75,352.94

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Solution

The fourth proportional to 139,015.16, 191,840.73 and 75,352.94 is: 103,986.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,015.16 : 191,840.73 = 75,352.94 : x
  2. Step 2: Convert to fraction form
    139,015.16/191,840.73 = 75,352.94/x
  3. Step 3: Cross multiply
    139,015.16x = 191,840.73 × 75,352.94
  4. Step 4: Simplify right side
    139,015.16x = 14,455,763,017.25
  5. Step 5: Solve for x
    x = 14,455,763,017.25/139,015.16
  6. Step 6: Final answer
    x = 103,986.95

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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.