Home / 145,440.32-218,160.78-40,259.60

Finding the Fourth Proportional to 145,440.32, 218,160.78 and 40,259.60

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Solution

The fourth proportional to 145,440.32, 218,160.78 and 40,259.60 is: 60,389.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,440.32 : 218,160.78 = 40,259.60 : x
  2. Step 2: Convert to fraction form
    145,440.32/218,160.78 = 40,259.60/x
  3. Step 3: Cross multiply
    145,440.32x = 218,160.78 × 40,259.60
  4. Step 4: Simplify right side
    145,440.32x = 8,783,065,738.49
  5. Step 5: Solve for x
    x = 8,783,065,738.49/145,440.32
  6. Step 6: Final answer
    x = 60,389.48

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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.