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Finding the Fourth Proportional to 170,889.10, 256,333.65 and 86,908.30

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Solution

The fourth proportional to 170,889.10, 256,333.65 and 86,908.30 is: 130,362.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,889.10 : 256,333.65 = 86,908.30 : x
  2. Step 2: Convert to fraction form
    170,889.10/256,333.65 = 86,908.30/x
  3. Step 3: Cross multiply
    170,889.10x = 256,333.65 × 86,908.30
  4. Step 4: Simplify right side
    170,889.10x = 22,277,521,754.30
  5. Step 5: Solve for x
    x = 22,277,521,754.30/170,889.10
  6. Step 6: Final answer
    x = 130,362.45

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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.