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Finding the Fourth Proportional to 139,737.51, 192,804.98 and 79,294.50

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Solution

The fourth proportional to 139,737.51, 192,804.98 and 79,294.50 is: 109,407.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,737.51 : 192,804.98 = 79,294.50 : x
  2. Step 2: Convert to fraction form
    139,737.51/192,804.98 = 79,294.50/x
  3. Step 3: Cross multiply
    139,737.51x = 192,804.98 × 79,294.50
  4. Step 4: Simplify right side
    139,737.51x = 15,288,374,090.14
  5. Step 5: Solve for x
    x = 15,288,374,090.14/139,737.51
  6. Step 6: Final answer
    x = 109,407.80

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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.