Home / 289,827.92-434,686.53-90,150.72

Finding the Fourth Proportional to 289,827.92, 434,686.53 and 90,150.72

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Solution

The fourth proportional to 289,827.92, 434,686.53 and 90,150.72 is: 135,208.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,827.92 : 434,686.53 = 90,150.72 : x
  2. Step 2: Convert to fraction form
    289,827.92/434,686.53 = 90,150.72/x
  3. Step 3: Cross multiply
    289,827.92x = 434,686.53 × 90,150.72
  4. Step 4: Simplify right side
    289,827.92x = 39,187,304,046.26
  5. Step 5: Solve for x
    x = 39,187,304,046.26/289,827.92
  6. Step 6: Final answer
    x = 135,208.86

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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.