Home / 142,433.95-196,537.02-81,992.92

Finding the Fourth Proportional to 142,433.95, 196,537.02 and 81,992.92

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Solution

The fourth proportional to 142,433.95, 196,537.02 and 81,992.92 is: 113,137.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,433.95 : 196,537.02 = 81,992.92 : x
  2. Step 2: Convert to fraction form
    142,433.95/196,537.02 = 81,992.92/x
  3. Step 3: Cross multiply
    142,433.95x = 196,537.02 × 81,992.92
  4. Step 4: Simplify right side
    142,433.95x = 16,114,644,157.90
  5. Step 5: Solve for x
    x = 16,114,644,157.90/142,433.95
  6. Step 6: Final answer
    x = 113,137.66

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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.