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Finding the Fourth Proportional to 144,950.88, 217,390.32 and 81,798.72

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Solution

The fourth proportional to 144,950.88, 217,390.32 and 81,798.72 is: 122,677.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,950.88 : 217,390.32 = 81,798.72 : x
  2. Step 2: Convert to fraction form
    144,950.88/217,390.32 = 81,798.72/x
  3. Step 3: Cross multiply
    144,950.88x = 217,390.32 × 81,798.72
  4. Step 4: Simplify right side
    144,950.88x = 17,782,249,916.39
  5. Step 5: Solve for x
    x = 17,782,249,916.39/144,950.88
  6. Step 6: Final answer
    x = 122,677.76

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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.