Home / 191,844.90-288,112.95-139,313.70

Finding the Fourth Proportional to 191,844.90, 288,112.95 and 139,313.70

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Solution

The fourth proportional to 191,844.90, 288,112.95 and 139,313.70 is: 209,221.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,844.90 : 288,112.95 = 139,313.70 : x
  2. Step 2: Convert to fraction form
    191,844.90/288,112.95 = 139,313.70/x
  3. Step 3: Cross multiply
    191,844.90x = 288,112.95 × 139,313.70
  4. Step 4: Simplify right side
    191,844.90x = 40,138,081,082.42
  5. Step 5: Solve for x
    x = 40,138,081,082.42/191,844.90
  6. Step 6: Final answer
    x = 209,221.52

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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.