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Finding the Fourth Proportional to 139,252.21, 192,167.88 and 75,590.01

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Solution

The fourth proportional to 139,252.21, 192,167.88 and 75,590.01 is: 104,314.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,252.21 : 192,167.88 = 75,590.01 : x
  2. Step 2: Convert to fraction form
    139,252.21/192,167.88 = 75,590.01/x
  3. Step 3: Cross multiply
    139,252.21x = 192,167.88 × 75,590.01
  4. Step 4: Simplify right side
    139,252.21x = 14,525,971,970.88
  5. Step 5: Solve for x
    x = 14,525,971,970.88/139,252.21
  6. Step 6: Final answer
    x = 104,314.12

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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.