Home / 108,731.57-163,138.86-42,218.37

Finding the Fourth Proportional to 108,731.57, 163,138.86 and 42,218.37

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Solution

The fourth proportional to 108,731.57, 163,138.86 and 42,218.37 is: 63,343.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,731.57 : 163,138.86 = 42,218.37 : x
  2. Step 2: Convert to fraction form
    108,731.57/163,138.86 = 42,218.37/x
  3. Step 3: Cross multiply
    108,731.57x = 163,138.86 × 42,218.37
  4. Step 4: Simplify right side
    108,731.57x = 6,887,456,752.86
  5. Step 5: Solve for x
    x = 6,887,456,752.86/108,731.57
  6. Step 6: Final answer
    x = 63,343.67

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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.