Home / 136,856.34-188,854.53-77,236.50

Finding the Fourth Proportional to 136,856.34, 188,854.53 and 77,236.50

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Solution

The fourth proportional to 136,856.34, 188,854.53 and 77,236.50 is: 106,582.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,856.34 : 188,854.53 = 77,236.50 : x
  2. Step 2: Convert to fraction form
    136,856.34/188,854.53 = 77,236.50/x
  3. Step 3: Cross multiply
    136,856.34x = 188,854.53 × 77,236.50
  4. Step 4: Simplify right side
    136,856.34x = 14,586,462,906.35
  5. Step 5: Solve for x
    x = 14,586,462,906.35/136,856.34
  6. Step 6: Final answer
    x = 106,582.30

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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.