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Finding the Fourth Proportional to 170,896.70, 256,389.85 and 65,719.10

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Solution

The fourth proportional to 170,896.70, 256,389.85 and 65,719.10 is: 98,595.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,896.70 : 256,389.85 = 65,719.10 : x
  2. Step 2: Convert to fraction form
    170,896.70/256,389.85 = 65,719.10/x
  3. Step 3: Cross multiply
    170,896.70x = 256,389.85 × 65,719.10
  4. Step 4: Simplify right side
    170,896.70x = 16,849,710,191.14
  5. Step 5: Solve for x
    x = 16,849,710,191.14/170,896.70
  6. Step 6: Final answer
    x = 98,595.88

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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.