Home / 108,721.40-163,082.10-100,848.20

Finding the Fourth Proportional to 108,721.40, 163,082.10 and 100,848.20

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Solution

The fourth proportional to 108,721.40, 163,082.10 and 100,848.20 is: 151,272.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,721.40 : 163,082.10 = 100,848.20 : x
  2. Step 2: Convert to fraction form
    108,721.40/163,082.10 = 100,848.20/x
  3. Step 3: Cross multiply
    108,721.40x = 163,082.10 × 100,848.20
  4. Step 4: Simplify right side
    108,721.40x = 16,446,536,237.22
  5. Step 5: Solve for x
    x = 16,446,536,237.22/108,721.40
  6. Step 6: Final answer
    x = 151,272.30

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Similar ratio
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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.