Home / 108,137.03-162,205.52-78,741.93

Finding the Fourth Proportional to 108,137.03, 162,205.52 and 78,741.93

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Solution

The fourth proportional to 108,137.03, 162,205.52 and 78,741.93 is: 118,112.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,137.03 : 162,205.52 = 78,741.93 : x
  2. Step 2: Convert to fraction form
    108,137.03/162,205.52 = 78,741.93/x
  3. Step 3: Cross multiply
    108,137.03x = 162,205.52 × 78,741.93
  4. Step 4: Simplify right side
    108,137.03x = 12,772,375,307.74
  5. Step 5: Solve for x
    x = 12,772,375,307.74/108,137.03
  6. Step 6: Final answer
    x = 118,112.88

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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.