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Finding the Fourth Proportional to 108,172.58, 162,259 and 28,210.50

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Solution

The fourth proportional to 108,172.58, 162,259 and 28,210.50 is: 42,315.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,172.58 : 162,259 = 28,210.50 : x
  2. Step 2: Convert to fraction form
    108,172.58/162,259 = 28,210.50/x
  3. Step 3: Cross multiply
    108,172.58x = 162,259 × 28,210.50
  4. Step 4: Simplify right side
    108,172.58x = 4,577,407,519.50
  5. Step 5: Solve for x
    x = 4,577,407,519.50/108,172.58
  6. Step 6: Final answer
    x = 42,315.78

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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.