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Finding the Fourth Proportional to 139,014.41, 191,839.70 and 75,352.19

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Solution

The fourth proportional to 139,014.41, 191,839.70 and 75,352.19 is: 103,985.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,014.41 : 191,839.70 = 75,352.19 : x
  2. Step 2: Convert to fraction form
    139,014.41/191,839.70 = 75,352.19/x
  3. Step 3: Cross multiply
    139,014.41x = 191,839.70 × 75,352.19
  4. Step 4: Simplify right side
    139,014.41x = 14,455,540,855.96
  5. Step 5: Solve for x
    x = 14,455,540,855.96/139,014.41
  6. Step 6: Final answer
    x = 103,985.92

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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.