Home / 139,470.04-192,577.26-85,780

Finding the Fourth Proportional to 139,470.04, 192,577.26 and 85,780

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Solution

The fourth proportional to 139,470.04, 192,577.26 and 85,780 is: 118,443.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,470.04 : 192,577.26 = 85,780 : x
  2. Step 2: Convert to fraction form
    139,470.04/192,577.26 = 85,780/x
  3. Step 3: Cross multiply
    139,470.04x = 192,577.26 × 85,780
  4. Step 4: Simplify right side
    139,470.04x = 16,519,277,362.80
  5. Step 5: Solve for x
    x = 16,519,277,362.80/139,470.04
  6. Step 6: Final answer
    x = 118,443.20

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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.