Home / 145,910.40-218,865.60-40,729.20

Finding the Fourth Proportional to 145,910.40, 218,865.60 and 40,729.20

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Solution

The fourth proportional to 145,910.40, 218,865.60 and 40,729.20 is: 61,093.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,910.40 : 218,865.60 = 40,729.20 : x
  2. Step 2: Convert to fraction form
    145,910.40/218,865.60 = 40,729.20/x
  3. Step 3: Cross multiply
    145,910.40x = 218,865.60 × 40,729.20
  4. Step 4: Simplify right side
    145,910.40x = 8,914,220,795.52
  5. Step 5: Solve for x
    x = 8,914,220,795.52/145,910.40
  6. Step 6: Final answer
    x = 61,093.80

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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.