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Finding the Fourth Proportional to 128,602.44, 192,903.68 and 53,681.71

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Solution

The fourth proportional to 128,602.44, 192,903.68 and 53,681.71 is: 80,522.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,602.44 : 192,903.68 = 53,681.71 : x
  2. Step 2: Convert to fraction form
    128,602.44/192,903.68 = 53,681.71/x
  3. Step 3: Cross multiply
    128,602.44x = 192,903.68 × 53,681.71
  4. Step 4: Simplify right side
    128,602.44x = 10,355,399,407.69
  5. Step 5: Solve for x
    x = 10,355,399,407.69/128,602.44
  6. Step 6: Final answer
    x = 80,522.57

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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.