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Finding the Fourth Proportional to 108,536.70, 162,805.05 and 103,928.70

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Solution

The fourth proportional to 108,536.70, 162,805.05 and 103,928.70 is: 155,893.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,536.70 : 162,805.05 = 103,928.70 : x
  2. Step 2: Convert to fraction form
    108,536.70/162,805.05 = 103,928.70/x
  3. Step 3: Cross multiply
    108,536.70x = 162,805.05 × 103,928.70
  4. Step 4: Simplify right side
    108,536.70x = 16,920,117,199.94
  5. Step 5: Solve for x
    x = 16,920,117,199.94/108,536.70
  6. Step 6: Final answer
    x = 155,893.05

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1.5x scale

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.