Home / 103,155.60-154,643.40-40,018.80

Finding the Fourth Proportional to 103,155.60, 154,643.40 and 40,018.80

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Solution

The fourth proportional to 103,155.60, 154,643.40 and 40,018.80 is: 59,993.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,155.60 : 154,643.40 = 40,018.80 : x
  2. Step 2: Convert to fraction form
    103,155.60/154,643.40 = 40,018.80/x
  3. Step 3: Cross multiply
    103,155.60x = 154,643.40 × 40,018.80
  4. Step 4: Simplify right side
    103,155.60x = 6,188,643,295.92
  5. Step 5: Solve for x
    x = 6,188,643,295.92/103,155.60
  6. Step 6: Final answer
    x = 59,993.28

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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.