Home / 108,729.40-163,094.10-100,856.20

Finding the Fourth Proportional to 108,729.40, 163,094.10 and 100,856.20

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Solution

The fourth proportional to 108,729.40, 163,094.10 and 100,856.20 is: 151,284.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,729.40 : 163,094.10 = 100,856.20 : x
  2. Step 2: Convert to fraction form
    108,729.40/163,094.10 = 100,856.20/x
  3. Step 3: Cross multiply
    108,729.40x = 163,094.10 × 100,856.20
  4. Step 4: Simplify right side
    108,729.40x = 16,449,051,168.42
  5. Step 5: Solve for x
    x = 16,449,051,168.42/108,729.40
  6. Step 6: Final answer
    x = 151,284.30

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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.