Home / 103,349.20-155,023.80-102,571.60

Finding the Fourth Proportional to 103,349.20, 155,023.80 and 102,571.60

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Solution

The fourth proportional to 103,349.20, 155,023.80 and 102,571.60 is: 153,857.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,349.20 : 155,023.80 = 102,571.60 : x
  2. Step 2: Convert to fraction form
    103,349.20/155,023.80 = 102,571.60/x
  3. Step 3: Cross multiply
    103,349.20x = 155,023.80 × 102,571.60
  4. Step 4: Simplify right side
    103,349.20x = 15,901,039,204.08
  5. Step 5: Solve for x
    x = 15,901,039,204.08/103,349.20
  6. Step 6: Final answer
    x = 153,857.40

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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.