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Finding the Fourth Proportional to 139,485.36, 192,483.36 and 79,052.52

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Solution

The fourth proportional to 139,485.36, 192,483.36 and 79,052.52 is: 109,088.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,485.36 : 192,483.36 = 79,052.52 : x
  2. Step 2: Convert to fraction form
    139,485.36/192,483.36 = 79,052.52/x
  3. Step 3: Cross multiply
    139,485.36x = 192,483.36 × 79,052.52
  4. Step 4: Simplify right side
    139,485.36x = 15,216,294,666.07
  5. Step 5: Solve for x
    x = 15,216,294,666.07/139,485.36
  6. Step 6: Final answer
    x = 109,088.83

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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.