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Finding the Fourth Proportional to 143,437.88, 214,959.99 and 90,753.05

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Solution

The fourth proportional to 143,437.88, 214,959.99 and 90,753.05 is: 136,005.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,437.88 : 214,959.99 = 90,753.05 : x
  2. Step 2: Convert to fraction form
    143,437.88/214,959.99 = 90,753.05/x
  3. Step 3: Cross multiply
    143,437.88x = 214,959.99 × 90,753.05
  4. Step 4: Simplify right side
    143,437.88x = 19,508,275,257.87
  5. Step 5: Solve for x
    x = 19,508,275,257.87/143,437.88
  6. Step 6: Final answer
    x = 136,005.04

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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.