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Finding the Fourth Proportional to 148,089.84, 204,368.67 and 81,021.84

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Solution

The fourth proportional to 148,089.84, 204,368.67 and 81,021.84 is: 111,812.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,089.84 : 204,368.67 = 81,021.84 : x
  2. Step 2: Convert to fraction form
    148,089.84/204,368.67 = 81,021.84/x
  3. Step 3: Cross multiply
    148,089.84x = 204,368.67 × 81,021.84
  4. Step 4: Simplify right side
    148,089.84x = 16,558,325,681.75
  5. Step 5: Solve for x
    x = 16,558,325,681.75/148,089.84
  6. Step 6: Final answer
    x = 111,812.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.