Home / 102,968.02-154,505.00-77,999.77

Finding the Fourth Proportional to 102,968.02, 154,505.00 and 77,999.77

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Solution

The fourth proportional to 102,968.02, 154,505.00 and 77,999.77 is: 117,039.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,968.02 : 154,505.00 = 77,999.77 : x
  2. Step 2: Convert to fraction form
    102,968.02/154,505.00 = 77,999.77/x
  3. Step 3: Cross multiply
    102,968.02x = 154,505.00 × 77,999.77
  4. Step 4: Simplify right side
    102,968.02x = 12,051,354,073.85
  5. Step 5: Solve for x
    x = 12,051,354,073.85/102,968.02
  6. Step 6: Final answer
    x = 117,039.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.