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Finding the Fourth Proportional to 108,809.80, 163,214.70 and 102,686.20

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Solution

The fourth proportional to 108,809.80, 163,214.70 and 102,686.20 is: 154,029.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,809.80 : 163,214.70 = 102,686.20 : x
  2. Step 2: Convert to fraction form
    108,809.80/163,214.70 = 102,686.20/x
  3. Step 3: Cross multiply
    108,809.80x = 163,214.70 × 102,686.20
  4. Step 4: Simplify right side
    108,809.80x = 16,759,897,327.14
  5. Step 5: Solve for x
    x = 16,759,897,327.14/108,809.80
  6. Step 6: Final answer
    x = 154,029.30

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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.