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Finding the Fourth Proportional to 170,728.96, 256,224.12 and 77,300.32

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Solution

The fourth proportional to 170,728.96, 256,224.12 and 77,300.32 is: 116,009.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,728.96 : 256,224.12 = 77,300.32 : x
  2. Step 2: Convert to fraction form
    170,728.96/256,224.12 = 77,300.32/x
  3. Step 3: Cross multiply
    170,728.96x = 256,224.12 × 77,300.32
  4. Step 4: Simplify right side
    170,728.96x = 19,806,206,467.72
  5. Step 5: Solve for x
    x = 19,806,206,467.72/170,728.96
  6. Step 6: Final answer
    x = 116,009.65

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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.