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Finding the Fourth Proportional to 108,602.90, 162,904.35 and 100,729.70

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Solution

The fourth proportional to 108,602.90, 162,904.35 and 100,729.70 is: 151,094.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,602.90 : 162,904.35 = 100,729.70 : x
  2. Step 2: Convert to fraction form
    108,602.90/162,904.35 = 100,729.70/x
  3. Step 3: Cross multiply
    108,602.90x = 162,904.35 × 100,729.70
  4. Step 4: Simplify right side
    108,602.90x = 16,409,306,304.20
  5. Step 5: Solve for x
    x = 16,409,306,304.20/108,602.90
  6. Step 6: Final answer
    x = 151,094.55

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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.