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Finding the Fourth Proportional to 170,133.60, 255,200.40 and 76,821.60

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Solution

The fourth proportional to 170,133.60, 255,200.40 and 76,821.60 is: 115,232.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,133.60 : 255,200.40 = 76,821.60 : x
  2. Step 2: Convert to fraction form
    170,133.60/255,200.40 = 76,821.60/x
  3. Step 3: Cross multiply
    170,133.60x = 255,200.40 × 76,821.60
  4. Step 4: Simplify right side
    170,133.60x = 19,604,903,048.64
  5. Step 5: Solve for x
    x = 19,604,903,048.64/170,133.60
  6. Step 6: Final answer
    x = 115,232.40

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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.