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Finding the Fourth Proportional to 103,606.00, 155,409.30 and 85,014.68

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Solution

The fourth proportional to 103,606.00, 155,409.30 and 85,014.68 is: 127,522.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,606.00 : 155,409.30 = 85,014.68 : x
  2. Step 2: Convert to fraction form
    103,606.00/155,409.30 = 85,014.68/x
  3. Step 3: Cross multiply
    103,606.00x = 155,409.30 × 85,014.68
  4. Step 4: Simplify right side
    103,606.00x = 13,212,071,131.48
  5. Step 5: Solve for x
    x = 13,212,071,131.48/103,606.00
  6. Step 6: Final answer
    x = 127,522.26

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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.