Home / 136,445.62-188,278.63-78,299.37

Finding the Fourth Proportional to 136,445.62, 188,278.63 and 78,299.37

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Solution

The fourth proportional to 136,445.62, 188,278.63 and 78,299.37 is: 108,043.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,445.62 : 188,278.63 = 78,299.37 : x
  2. Step 2: Convert to fraction form
    136,445.62/188,278.63 = 78,299.37/x
  3. Step 3: Cross multiply
    136,445.62x = 188,278.63 × 78,299.37
  4. Step 4: Simplify right side
    136,445.62x = 14,742,098,113.46
  5. Step 5: Solve for x
    x = 14,742,098,113.46/136,445.62
  6. Step 6: Final answer
    x = 108,043.76

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1.5x scale

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.