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Finding the Fourth Proportional to 103,605.54, 155,553.70 and 53,040.68

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Solution

The fourth proportional to 103,605.54, 155,553.70 and 53,040.68 is: 79,635.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,605.54 : 155,553.70 = 53,040.68 : x
  2. Step 2: Convert to fraction form
    103,605.54/155,553.70 = 53,040.68/x
  3. Step 3: Cross multiply
    103,605.54x = 155,553.70 × 53,040.68
  4. Step 4: Simplify right side
    103,605.54x = 8,250,674,024.52
  5. Step 5: Solve for x
    x = 8,250,674,024.52/103,605.54
  6. Step 6: Final answer
    x = 79,635.45

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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.