Home / 170,807.17-256,366.23-90,912.21

Finding the Fourth Proportional to 170,807.17, 256,366.23 and 90,912.21

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Solution

The fourth proportional to 170,807.17, 256,366.23 and 90,912.21 is: 136,451.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,807.17 : 256,366.23 = 90,912.21 : x
  2. Step 2: Convert to fraction form
    170,807.17/256,366.23 = 90,912.21/x
  3. Step 3: Cross multiply
    170,807.17x = 256,366.23 × 90,912.21
  4. Step 4: Simplify right side
    170,807.17x = 23,306,820,445.76
  5. Step 5: Solve for x
    x = 23,306,820,445.76/170,807.17
  6. Step 6: Final answer
    x = 136,451.07

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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.