Home / 103,544.20-155,088.64-85,571.17

Finding the Fourth Proportional to 103,544.20, 155,088.64 and 85,571.17

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Solution

The fourth proportional to 103,544.20, 155,088.64 and 85,571.17 is: 128,168.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,544.20 : 155,088.64 = 85,571.17 : x
  2. Step 2: Convert to fraction form
    103,544.20/155,088.64 = 85,571.17/x
  3. Step 3: Cross multiply
    103,544.20x = 155,088.64 × 85,571.17
  4. Step 4: Simplify right side
    103,544.20x = 13,271,115,603.07
  5. Step 5: Solve for x
    x = 13,271,115,603.07/103,544.20
  6. Step 6: Final answer
    x = 128,168.60

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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.