Home / 128,317.80-192,476.70-39,563.40

Finding the Fourth Proportional to 128,317.80, 192,476.70 and 39,563.40

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Solution

The fourth proportional to 128,317.80, 192,476.70 and 39,563.40 is: 59,345.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,317.80 : 192,476.70 = 39,563.40 : x
  2. Step 2: Convert to fraction form
    128,317.80/192,476.70 = 39,563.40/x
  3. Step 3: Cross multiply
    128,317.80x = 192,476.70 × 39,563.40
  4. Step 4: Simplify right side
    128,317.80x = 7,615,032,672.78
  5. Step 5: Solve for x
    x = 7,615,032,672.78/128,317.80
  6. Step 6: Final answer
    x = 59,345.10

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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.