Home / 128,342.10-192,513.15-53,437.35

Finding the Fourth Proportional to 128,342.10, 192,513.15 and 53,437.35

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Solution

The fourth proportional to 128,342.10, 192,513.15 and 53,437.35 is: 80,156.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,342.10 : 192,513.15 = 53,437.35 : x
  2. Step 2: Convert to fraction form
    128,342.10/192,513.15 = 53,437.35/x
  3. Step 3: Cross multiply
    128,342.10x = 192,513.15 × 53,437.35
  4. Step 4: Simplify right side
    128,342.10x = 10,287,392,576.15
  5. Step 5: Solve for x
    x = 10,287,392,576.15/128,342.10
  6. Step 6: Final answer
    x = 80,156.03

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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.