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Finding the Fourth Proportional to 128,047.95, 192,071.93 and 34,553.55

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Solution

The fourth proportional to 128,047.95, 192,071.93 and 34,553.55 is: 51,830.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,047.95 : 192,071.93 = 34,553.55 : x
  2. Step 2: Convert to fraction form
    128,047.95/192,071.93 = 34,553.55/x
  3. Step 3: Cross multiply
    128,047.95x = 192,071.93 × 34,553.55
  4. Step 4: Simplify right side
    128,047.95x = 6,636,766,864.08
  5. Step 5: Solve for x
    x = 6,636,766,864.08/128,047.95
  6. Step 6: Final answer
    x = 51,830.33

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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.