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Finding the Fourth Proportional to 145,141.99, 200,260.89 and 84,678.12

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Solution

The fourth proportional to 145,141.99, 200,260.89 and 84,678.12 is: 116,835.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,141.99 : 200,260.89 = 84,678.12 : x
  2. Step 2: Convert to fraction form
    145,141.99/200,260.89 = 84,678.12/x
  3. Step 3: Cross multiply
    145,141.99x = 200,260.89 × 84,678.12
  4. Step 4: Simplify right side
    145,141.99x = 16,957,715,674.73
  5. Step 5: Solve for x
    x = 16,957,715,674.73/145,141.99
  6. Step 6: Final answer
    x = 116,835.36

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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.