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Finding the Fourth Proportional to 108,808.20, 163,212.30 and 71,483.40

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Solution

The fourth proportional to 108,808.20, 163,212.30 and 71,483.40 is: 107,225.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,808.20 : 163,212.30 = 71,483.40 : x
  2. Step 2: Convert to fraction form
    108,808.20/163,212.30 = 71,483.40/x
  3. Step 3: Cross multiply
    108,808.20x = 163,212.30 × 71,483.40
  4. Step 4: Simplify right side
    108,808.20x = 11,666,970,125.82
  5. Step 5: Solve for x
    x = 11,666,970,125.82/108,808.20
  6. Step 6: Final answer
    x = 107,225.10

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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.