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Finding the Fourth Proportional to 143,898.98, 215,725.37 and 55,216.13

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Solution

The fourth proportional to 143,898.98, 215,725.37 and 55,216.13 is: 82,776.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,898.98 : 215,725.37 = 55,216.13 : x
  2. Step 2: Convert to fraction form
    143,898.98/215,725.37 = 55,216.13/x
  3. Step 3: Cross multiply
    143,898.98x = 215,725.37 × 55,216.13
  4. Step 4: Simplify right side
    143,898.98x = 11,911,518,719.51
  5. Step 5: Solve for x
    x = 11,911,518,719.51/143,898.98
  6. Step 6: Final answer
    x = 82,776.95

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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.