Home / 136,478.21-188,338.01-76,051.40

Finding the Fourth Proportional to 136,478.21, 188,338.01 and 76,051.40

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Solution

The fourth proportional to 136,478.21, 188,338.01 and 76,051.40 is: 104,949.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,478.21 : 188,338.01 = 76,051.40 : x
  2. Step 2: Convert to fraction form
    136,478.21/188,338.01 = 76,051.40/x
  3. Step 3: Cross multiply
    136,478.21x = 188,338.01 × 76,051.40
  4. Step 4: Simplify right side
    136,478.21x = 14,323,368,011.77
  5. Step 5: Solve for x
    x = 14,323,368,011.77/136,478.21
  6. Step 6: Final answer
    x = 104,949.86

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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.