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Finding the Fourth Proportional to 139,518.05, 192,529.65 and 75,853.65

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Solution

The fourth proportional to 139,518.05, 192,529.65 and 75,853.65 is: 104,675.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,518.05 : 192,529.65 = 75,853.65 : x
  2. Step 2: Convert to fraction form
    139,518.05/192,529.65 = 75,853.65/x
  3. Step 3: Cross multiply
    139,518.05x = 192,529.65 × 75,853.65
  4. Step 4: Simplify right side
    139,518.05x = 14,604,076,306.45
  5. Step 5: Solve for x
    x = 14,604,076,306.45/139,518.05
  6. Step 6: Final answer
    x = 104,675.18

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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.