Home / 146,052.30-218,021.91-128,337.60

Finding the Fourth Proportional to 146,052.30, 218,021.91 and 128,337.60

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Solution

The fourth proportional to 146,052.30, 218,021.91 and 128,337.60 is: 191,578.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,052.30 : 218,021.91 = 128,337.60 : x
  2. Step 2: Convert to fraction form
    146,052.30/218,021.91 = 128,337.60/x
  3. Step 3: Cross multiply
    146,052.30x = 218,021.91 × 128,337.60
  4. Step 4: Simplify right side
    146,052.30x = 27,980,408,676.82
  5. Step 5: Solve for x
    x = 27,980,408,676.82/146,052.30
  6. Step 6: Final answer
    x = 191,578.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.