Home / 289,828.92-434,688.03-90,151.72

Finding the Fourth Proportional to 289,828.92, 434,688.03 and 90,151.72

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Solution

The fourth proportional to 289,828.92, 434,688.03 and 90,151.72 is: 135,210.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,828.92 : 434,688.03 = 90,151.72 : x
  2. Step 2: Convert to fraction form
    289,828.92/434,688.03 = 90,151.72/x
  3. Step 3: Cross multiply
    289,828.92x = 434,688.03 × 90,151.72
  4. Step 4: Simplify right side
    289,828.92x = 39,187,873,567.91
  5. Step 5: Solve for x
    x = 39,187,873,567.91/289,828.92
  6. Step 6: Final answer
    x = 135,210.36

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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.