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Finding the Fourth Proportional to 170,895.70, 256,388.35 and 65,718.10

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Solution

The fourth proportional to 170,895.70, 256,388.35 and 65,718.10 is: 98,594.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,895.70 : 256,388.35 = 65,718.10 : x
  2. Step 2: Convert to fraction form
    170,895.70/256,388.35 = 65,718.10/x
  3. Step 3: Cross multiply
    170,895.70x = 256,388.35 × 65,718.10
  4. Step 4: Simplify right side
    170,895.70x = 16,849,355,224.14
  5. Step 5: Solve for x
    x = 16,849,355,224.14/170,895.70
  6. Step 6: Final answer
    x = 98,594.38

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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.