Home / 139,248.02-192,166.57-81,876.98

Finding the Fourth Proportional to 139,248.02, 192,166.57 and 81,876.98

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Solution

The fourth proportional to 139,248.02, 192,166.57 and 81,876.98 is: 112,992.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,248.02 : 192,166.57 = 81,876.98 : x
  2. Step 2: Convert to fraction form
    139,248.02/192,166.57 = 81,876.98/x
  3. Step 3: Cross multiply
    139,248.02x = 192,166.57 × 81,876.98
  4. Step 4: Simplify right side
    139,248.02x = 15,734,018,991.32
  5. Step 5: Solve for x
    x = 15,734,018,991.32/139,248.02
  6. Step 6: Final answer
    x = 112,992.76

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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.