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Finding the Fourth Proportional to 103,623.15, 155,434.73 and 103,623.15

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Solution

The fourth proportional to 103,623.15, 155,434.73 and 103,623.15 is: 155,434.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,623.15 : 155,434.73 = 103,623.15 : x
  2. Step 2: Convert to fraction form
    103,623.15/155,434.73 = 103,623.15/x
  3. Step 3: Cross multiply
    103,623.15x = 155,434.73 × 103,623.15
  4. Step 4: Simplify right side
    103,623.15x = 16,106,635,823.88
  5. Step 5: Solve for x
    x = 16,106,635,823.88/103,623.15
  6. Step 6: Final answer
    x = 155,434.73

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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.