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Finding the Fourth Proportional to 216,801.69, 299,150.65 and 136,171.79

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Solution

The fourth proportional to 216,801.69, 299,150.65 and 136,171.79 is: 187,894.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,801.69 : 299,150.65 = 136,171.79 : x
  2. Step 2: Convert to fraction form
    216,801.69/299,150.65 = 136,171.79/x
  3. Step 3: Cross multiply
    216,801.69x = 299,150.65 × 136,171.79
  4. Step 4: Simplify right side
    216,801.69x = 40,735,877,653.98
  5. Step 5: Solve for x
    x = 40,735,877,653.98/216,801.69
  6. Step 6: Final answer
    x = 187,894.65

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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.