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Finding the Fourth Proportional to 139,737.38, 192,838.04 and 76,075.63

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Solution

The fourth proportional to 139,737.38, 192,838.04 and 76,075.63 is: 104,984.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,737.38 : 192,838.04 = 76,075.63 : x
  2. Step 2: Convert to fraction form
    139,737.38/192,838.04 = 76,075.63/x
  3. Step 3: Cross multiply
    139,737.38x = 192,838.04 × 76,075.63
  4. Step 4: Simplify right side
    139,737.38x = 14,670,274,518.49
  5. Step 5: Solve for x
    x = 14,670,274,518.49/139,737.38
  6. Step 6: Final answer
    x = 104,984.62

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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.