Home / 123,579.47-170,539.89-66,990.98

Finding the Fourth Proportional to 123,579.47, 170,539.89 and 66,990.98

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Solution

The fourth proportional to 123,579.47, 170,539.89 and 66,990.98 is: 92,447.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,579.47 : 170,539.89 = 66,990.98 : x
  2. Step 2: Convert to fraction form
    123,579.47/170,539.89 = 66,990.98/x
  3. Step 3: Cross multiply
    123,579.47x = 170,539.89 × 66,990.98
  4. Step 4: Simplify right side
    123,579.47x = 11,424,634,360.19
  5. Step 5: Solve for x
    x = 11,424,634,360.19/123,579.47
  6. Step 6: Final answer
    x = 92,447.67

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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.