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Finding the Fourth Proportional to 108,003.80, 162,005.70 and 105,379.40

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Solution

The fourth proportional to 108,003.80, 162,005.70 and 105,379.40 is: 158,069.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,003.80 : 162,005.70 = 105,379.40 : x
  2. Step 2: Convert to fraction form
    108,003.80/162,005.70 = 105,379.40/x
  3. Step 3: Cross multiply
    108,003.80x = 162,005.70 × 105,379.40
  4. Step 4: Simplify right side
    108,003.80x = 17,072,063,462.58
  5. Step 5: Solve for x
    x = 17,072,063,462.58/108,003.80
  6. Step 6: Final answer
    x = 158,069.10

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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.