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Finding the Fourth Proportional to 139,158.17, 192,038.33 and 75,495.95

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Solution

The fourth proportional to 139,158.17, 192,038.33 and 75,495.95 is: 104,184.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,158.17 : 192,038.33 = 75,495.95 : x
  2. Step 2: Convert to fraction form
    139,158.17/192,038.33 = 75,495.95/x
  3. Step 3: Cross multiply
    139,158.17x = 192,038.33 × 75,495.95
  4. Step 4: Simplify right side
    139,158.17x = 14,498,114,822.09
  5. Step 5: Solve for x
    x = 14,498,114,822.09/139,158.17
  6. Step 6: Final answer
    x = 104,184.44

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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.