Home / 170,816.70-256,225.05-77,322.45

Finding the Fourth Proportional to 170,816.70, 256,225.05 and 77,322.45

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Solution

The fourth proportional to 170,816.70, 256,225.05 and 77,322.45 is: 115,983.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,816.70 : 256,225.05 = 77,322.45 : x
  2. Step 2: Convert to fraction form
    170,816.70/256,225.05 = 77,322.45/x
  3. Step 3: Cross multiply
    170,816.70x = 256,225.05 × 77,322.45
  4. Step 4: Simplify right side
    170,816.70x = 19,811,948,617.37
  5. Step 5: Solve for x
    x = 19,811,948,617.37/170,816.70
  6. Step 6: Final answer
    x = 115,983.68

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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.