Home / 128,132.16-192,239.36-61,577.10

Finding the Fourth Proportional to 128,132.16, 192,239.36 and 61,577.10

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Solution

The fourth proportional to 128,132.16, 192,239.36 and 61,577.10 is: 92,385.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,132.16 : 192,239.36 = 61,577.10 : x
  2. Step 2: Convert to fraction form
    128,132.16/192,239.36 = 61,577.10/x
  3. Step 3: Cross multiply
    128,132.16x = 192,239.36 × 61,577.10
  4. Step 4: Simplify right side
    128,132.16x = 11,837,541,986.77
  5. Step 5: Solve for x
    x = 11,837,541,986.77/128,132.16
  6. Step 6: Final answer
    x = 92,385.41

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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.