Home / 103,422.64-142,731.84-60,989.44

Finding the Fourth Proportional to 103,422.64, 142,731.84 and 60,989.44

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Solution

The fourth proportional to 103,422.64, 142,731.84 and 60,989.44 is: 84,170.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,422.64 : 142,731.84 = 60,989.44 : x
  2. Step 2: Convert to fraction form
    103,422.64/142,731.84 = 60,989.44/x
  3. Step 3: Cross multiply
    103,422.64x = 142,731.84 × 60,989.44
  4. Step 4: Simplify right side
    103,422.64x = 8,705,134,991.77
  5. Step 5: Solve for x
    x = 8,705,134,991.77/103,422.64
  6. Step 6: Final answer
    x = 84,170.50

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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.