Home / 151,816.68-209,508.12-83,831.76

Finding the Fourth Proportional to 151,816.68, 209,508.12 and 83,831.76

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Solution

The fourth proportional to 151,816.68, 209,508.12 and 83,831.76 is: 115,688.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,816.68 : 209,508.12 = 83,831.76 : x
  2. Step 2: Convert to fraction form
    151,816.68/209,508.12 = 83,831.76/x
  3. Step 3: Cross multiply
    151,816.68x = 209,508.12 × 83,831.76
  4. Step 4: Simplify right side
    151,816.68x = 17,563,434,433.89
  5. Step 5: Solve for x
    x = 17,563,434,433.89/151,816.68
  6. Step 6: Final answer
    x = 115,688.44

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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.