Home / 128,671.20-193,008.24-53,802.72

Finding the Fourth Proportional to 128,671.20, 193,008.24 and 53,802.72

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Solution

The fourth proportional to 128,671.20, 193,008.24 and 53,802.72 is: 80,704.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,671.20 : 193,008.24 = 53,802.72 : x
  2. Step 2: Convert to fraction form
    128,671.20/193,008.24 = 53,802.72/x
  3. Step 3: Cross multiply
    128,671.20x = 193,008.24 × 53,802.72
  4. Step 4: Simplify right side
    128,671.20x = 10,384,368,294.41
  5. Step 5: Solve for x
    x = 10,384,368,294.41/128,671.20
  6. Step 6: Final answer
    x = 80,704.68

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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.