Home / 128,108.47-192,058.84-53,284.60

Finding the Fourth Proportional to 128,108.47, 192,058.84 and 53,284.60

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Solution

The fourth proportional to 128,108.47, 192,058.84 and 53,284.60 is: 79,883.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,108.47 : 192,058.84 = 53,284.60 : x
  2. Step 2: Convert to fraction form
    128,108.47/192,058.84 = 53,284.60/x
  3. Step 3: Cross multiply
    128,108.47x = 192,058.84 × 53,284.60
  4. Step 4: Simplify right side
    128,108.47x = 10,233,778,465.86
  5. Step 5: Solve for x
    x = 10,233,778,465.86/128,108.47
  6. Step 6: Final answer
    x = 79,883.70

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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.