Home / 128,935.98-192,521.57-115,522.38

Finding the Fourth Proportional to 128,935.98, 192,521.57 and 115,522.38

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Solution

The fourth proportional to 128,935.98, 192,521.57 and 115,522.38 is: 172,492.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,935.98 : 192,521.57 = 115,522.38 : x
  2. Step 2: Convert to fraction form
    128,935.98/192,521.57 = 115,522.38/x
  3. Step 3: Cross multiply
    128,935.98x = 192,521.57 × 115,522.38
  4. Step 4: Simplify right side
    128,935.98x = 22,240,549,390.12
  5. Step 5: Solve for x
    x = 22,240,549,390.12/128,935.98
  6. Step 6: Final answer
    x = 172,492.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.