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Finding the Fourth Proportional to 128,407.60, 192,596.82 and 49,515.22

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Solution

The fourth proportional to 128,407.60, 192,596.82 and 49,515.22 is: 74,267.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,407.60 : 192,596.82 = 49,515.22 : x
  2. Step 2: Convert to fraction form
    128,407.60/192,596.82 = 49,515.22/x
  3. Step 3: Cross multiply
    128,407.60x = 192,596.82 × 49,515.22
  4. Step 4: Simplify right side
    128,407.60x = 9,536,473,913.60
  5. Step 5: Solve for x
    x = 9,536,473,913.60/128,407.60
  6. Step 6: Final answer
    x = 74,267.21

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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.