Home / 108,533.20-162,702.60-71,111.20

Finding the Fourth Proportional to 108,533.20, 162,702.60 and 71,111.20

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Solution

The fourth proportional to 108,533.20, 162,702.60 and 71,111.20 is: 106,603.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,533.20 : 162,702.60 = 71,111.20 : x
  2. Step 2: Convert to fraction form
    108,533.20/162,702.60 = 71,111.20/x
  3. Step 3: Cross multiply
    108,533.20x = 162,702.60 × 71,111.20
  4. Step 4: Simplify right side
    108,533.20x = 11,569,977,129.12
  5. Step 5: Solve for x
    x = 11,569,977,129.12/108,533.20
  6. Step 6: Final answer
    x = 106,603.11

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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.