Home / 119,721.69-165,213.95-66,011.76

Finding the Fourth Proportional to 119,721.69, 165,213.95 and 66,011.76

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Solution

The fourth proportional to 119,721.69, 165,213.95 and 66,011.76 is: 91,095.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,721.69 : 165,213.95 = 66,011.76 : x
  2. Step 2: Convert to fraction form
    119,721.69/165,213.95 = 66,011.76/x
  3. Step 3: Cross multiply
    119,721.69x = 165,213.95 × 66,011.76
  4. Step 4: Simplify right side
    119,721.69x = 10,906,063,285.99
  5. Step 5: Solve for x
    x = 10,906,063,285.99/119,721.69
  6. Step 6: Final answer
    x = 91,095.13

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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.