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Finding the Fourth Proportional to 153,047.64, 211,204.62 and 85,979.64

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Solution

The fourth proportional to 153,047.64, 211,204.62 and 85,979.64 is: 118,651.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,047.64 : 211,204.62 = 85,979.64 : x
  2. Step 2: Convert to fraction form
    153,047.64/211,204.62 = 85,979.64/x
  3. Step 3: Cross multiply
    153,047.64x = 211,204.62 × 85,979.64
  4. Step 4: Simplify right side
    153,047.64x = 18,159,297,193.94
  5. Step 5: Solve for x
    x = 18,159,297,193.94/153,047.64
  6. Step 6: Final answer
    x = 118,651.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.