Home / 145,415.20-218,133.60-51,908.80

Finding the Fourth Proportional to 145,415.20, 218,133.60 and 51,908.80

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Solution

The fourth proportional to 145,415.20, 218,133.60 and 51,908.80 is: 77,867.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,415.20 : 218,133.60 = 51,908.80 : x
  2. Step 2: Convert to fraction form
    145,415.20/218,133.60 = 51,908.80/x
  3. Step 3: Cross multiply
    145,415.20x = 218,133.60 × 51,908.80
  4. Step 4: Simplify right side
    145,415.20x = 11,323,053,415.68
  5. Step 5: Solve for x
    x = 11,323,053,415.68/145,415.20
  6. Step 6: Final answer
    x = 77,867.06

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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.