Home / 103,946.40-155,919.60-87,616.80

Finding the Fourth Proportional to 103,946.40, 155,919.60 and 87,616.80

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Solution

The fourth proportional to 103,946.40, 155,919.60 and 87,616.80 is: 131,425.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,946.40 : 155,919.60 = 87,616.80 : x
  2. Step 2: Convert to fraction form
    103,946.40/155,919.60 = 87,616.80/x
  3. Step 3: Cross multiply
    103,946.40x = 155,919.60 × 87,616.80
  4. Step 4: Simplify right side
    103,946.40x = 13,661,176,409.28
  5. Step 5: Solve for x
    x = 13,661,176,409.28/103,946.40
  6. Step 6: Final answer
    x = 131,425.20

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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.