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Finding the Fourth Proportional to 113,989.44, 157,308 and 63,688.32

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Solution

The fourth proportional to 113,989.44, 157,308 and 63,688.32 is: 87,891.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,989.44 : 157,308 = 63,688.32 : x
  2. Step 2: Convert to fraction form
    113,989.44/157,308 = 63,688.32/x
  3. Step 3: Cross multiply
    113,989.44x = 157,308 × 63,688.32
  4. Step 4: Simplify right side
    113,989.44x = 10,018,682,242.56
  5. Step 5: Solve for x
    x = 10,018,682,242.56/113,989.44
  6. Step 6: Final answer
    x = 87,891.32

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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.