Home / 143,368.02-197,849.31-78,840.66

Finding the Fourth Proportional to 143,368.02, 197,849.31 and 78,840.66

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Solution

The fourth proportional to 143,368.02, 197,849.31 and 78,840.66 is: 108,800.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,368.02 : 197,849.31 = 78,840.66 : x
  2. Step 2: Convert to fraction form
    143,368.02/197,849.31 = 78,840.66/x
  3. Step 3: Cross multiply
    143,368.02x = 197,849.31 × 78,840.66
  4. Step 4: Simplify right side
    143,368.02x = 15,598,570,180.94
  5. Step 5: Solve for x
    x = 15,598,570,180.94/143,368.02
  6. Step 6: Final answer
    x = 108,800.90

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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.