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Finding the Fourth Proportional to 144,464.72, 216,459.95 and 138,927.96

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Solution

The fourth proportional to 144,464.72, 216,459.95 and 138,927.96 is: 208,163.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,464.72 : 216,459.95 = 138,927.96 : x
  2. Step 2: Convert to fraction form
    144,464.72/216,459.95 = 138,927.96/x
  3. Step 3: Cross multiply
    144,464.72x = 216,459.95 × 138,927.96
  4. Step 4: Simplify right side
    144,464.72x = 30,072,338,580.56
  5. Step 5: Solve for x
    x = 30,072,338,580.56/144,464.72
  6. Step 6: Final answer
    x = 208,163.90

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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.