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Finding the Fourth Proportional to 103,218.33, 154,827.74 and 28,339.50

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Solution

The fourth proportional to 103,218.33, 154,827.74 and 28,339.50 is: 42,509.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,218.33 : 154,827.74 = 28,339.50 : x
  2. Step 2: Convert to fraction form
    103,218.33/154,827.74 = 28,339.50/x
  3. Step 3: Cross multiply
    103,218.33x = 154,827.74 × 28,339.50
  4. Step 4: Simplify right side
    103,218.33x = 4,387,741,389.18
  5. Step 5: Solve for x
    x = 4,387,741,389.18/103,218.33
  6. Step 6: Final answer
    x = 42,509.32

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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.