Home / 162,005.70-242,899.20-86,116.80

Finding the Fourth Proportional to 162,005.70, 242,899.20 and 86,116.80

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Solution

The fourth proportional to 162,005.70, 242,899.20 and 86,116.80 is: 129,117.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,005.70 : 242,899.20 = 86,116.80 : x
  2. Step 2: Convert to fraction form
    162,005.70/242,899.20 = 86,116.80/x
  3. Step 3: Cross multiply
    162,005.70x = 242,899.20 × 86,116.80
  4. Step 4: Simplify right side
    162,005.70x = 20,917,701,826.56
  5. Step 5: Solve for x
    x = 20,917,701,826.56/162,005.70
  6. Step 6: Final answer
    x = 129,117.07

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1.5x scale

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.