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Finding the Fourth Proportional to 151,830.80, 227,746.20 and 128,211.20

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Solution

The fourth proportional to 151,830.80, 227,746.20 and 128,211.20 is: 192,316.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,830.80 : 227,746.20 = 128,211.20 : x
  2. Step 2: Convert to fraction form
    151,830.80/227,746.20 = 128,211.20/x
  3. Step 3: Cross multiply
    151,830.80x = 227,746.20 × 128,211.20
  4. Step 4: Simplify right side
    151,830.80x = 29,199,613,597.44
  5. Step 5: Solve for x
    x = 29,199,613,597.44/151,830.80
  6. Step 6: Final answer
    x = 192,316.80

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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.