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Finding the Fourth Proportional to 100,490.94, 138,666.99 and 58,063.14

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Solution

The fourth proportional to 100,490.94, 138,666.99 and 58,063.14 is: 80,121.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,490.94 : 138,666.99 = 58,063.14 : x
  2. Step 2: Convert to fraction form
    100,490.94/138,666.99 = 58,063.14/x
  3. Step 3: Cross multiply
    100,490.94x = 138,666.99 × 58,063.14
  4. Step 4: Simplify right side
    100,490.94x = 8,051,440,853.75
  5. Step 5: Solve for x
    x = 8,051,440,853.75/100,490.94
  6. Step 6: Final answer
    x = 80,121.06

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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.