Home / 191,845.40-288,113.70-139,314.20

Finding the Fourth Proportional to 191,845.40, 288,113.70 and 139,314.20

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Solution

The fourth proportional to 191,845.40, 288,113.70 and 139,314.20 is: 209,222.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,845.40 : 288,113.70 = 139,314.20 : x
  2. Step 2: Convert to fraction form
    191,845.40/288,113.70 = 139,314.20/x
  3. Step 3: Cross multiply
    191,845.40x = 288,113.70 × 139,314.20
  4. Step 4: Simplify right side
    191,845.40x = 40,138,329,624.54
  5. Step 5: Solve for x
    x = 40,138,329,624.54/191,845.40
  6. Step 6: Final answer
    x = 209,222.27

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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.