Home / 118,011.58-162,916.17-79,972.09

Finding the Fourth Proportional to 118,011.58, 162,916.17 and 79,972.09

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Solution

The fourth proportional to 118,011.58, 162,916.17 and 79,972.09 is: 110,402.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,011.58 : 162,916.17 = 79,972.09 : x
  2. Step 2: Convert to fraction form
    118,011.58/162,916.17 = 79,972.09/x
  3. Step 3: Cross multiply
    118,011.58x = 162,916.17 × 79,972.09
  4. Step 4: Simplify right side
    118,011.58x = 13,028,746,609.70
  5. Step 5: Solve for x
    x = 13,028,746,609.70/118,011.58
  6. Step 6: Final answer
    x = 110,402.27

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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.