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Finding the Fourth Proportional to 165,616.52, 248,113.74 and 128,499.08

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Solution

The fourth proportional to 165,616.52, 248,113.74 and 128,499.08 is: 192,507.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,616.52 : 248,113.74 = 128,499.08 : x
  2. Step 2: Convert to fraction form
    165,616.52/248,113.74 = 128,499.08/x
  3. Step 3: Cross multiply
    165,616.52x = 248,113.74 × 128,499.08
  4. Step 4: Simplify right side
    165,616.52x = 31,882,387,325.36
  5. Step 5: Solve for x
    x = 31,882,387,325.36/165,616.52
  6. Step 6: Final answer
    x = 192,507.29

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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.