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Finding the Fourth Proportional to 103,412.35, 155,118.53 and 103,412.35

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Solution

The fourth proportional to 103,412.35, 155,118.53 and 103,412.35 is: 155,118.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,412.35 : 155,118.53 = 103,412.35 : x
  2. Step 2: Convert to fraction form
    103,412.35/155,118.53 = 103,412.35/x
  3. Step 3: Cross multiply
    103,412.35x = 155,118.53 × 103,412.35
  4. Step 4: Simplify right side
    103,412.35x = 16,041,171,715.85
  5. Step 5: Solve for x
    x = 16,041,171,715.85/103,412.35
  6. Step 6: Final answer
    x = 155,118.53

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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.