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Finding the Fourth Proportional to 103,155.23, 154,731.56 and 28,275.30

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Solution

The fourth proportional to 103,155.23, 154,731.56 and 28,275.30 is: 42,412.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,155.23 : 154,731.56 = 28,275.30 : x
  2. Step 2: Convert to fraction form
    103,155.23/154,731.56 = 28,275.30/x
  3. Step 3: Cross multiply
    103,155.23x = 154,731.56 × 28,275.30
  4. Step 4: Simplify right side
    103,155.23x = 4,375,081,137.09
  5. Step 5: Solve for x
    x = 4,375,081,137.09/103,155.23
  6. Step 6: Final answer
    x = 42,412.60

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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.