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Finding the Fourth Proportional to 139,476.35, 192,477.65 and 75,814.00

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Solution

The fourth proportional to 139,476.35, 192,477.65 and 75,814.00 is: 104,623.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,476.35 : 192,477.65 = 75,814.00 : x
  2. Step 2: Convert to fraction form
    139,476.35/192,477.65 = 75,814.00/x
  3. Step 3: Cross multiply
    139,476.35x = 192,477.65 × 75,814.00
  4. Step 4: Simplify right side
    139,476.35x = 14,592,499,696.84
  5. Step 5: Solve for x
    x = 14,592,499,696.84/139,476.35
  6. Step 6: Final answer
    x = 104,623.47

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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.