Home / 146,919.20-220,646.10-128,548.40

Finding the Fourth Proportional to 146,919.20, 220,646.10 and 128,548.40

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Solution

The fourth proportional to 146,919.20, 220,646.10 and 128,548.40 is: 193,056.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,919.20 : 220,646.10 = 128,548.40 : x
  2. Step 2: Convert to fraction form
    146,919.20/220,646.10 = 128,548.40/x
  3. Step 3: Cross multiply
    146,919.20x = 220,646.10 × 128,548.40
  4. Step 4: Simplify right side
    146,919.20x = 28,363,703,121.24
  5. Step 5: Solve for x
    x = 28,363,703,121.24/146,919.20
  6. Step 6: Final answer
    x = 193,056.48

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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.