Home / 136,473.90-188,333.99-79,146.48

Finding the Fourth Proportional to 136,473.90, 188,333.99 and 79,146.48

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Solution

The fourth proportional to 136,473.90, 188,333.99 and 79,146.48 is: 109,222.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,473.90 : 188,333.99 = 79,146.48 : x
  2. Step 2: Convert to fraction form
    136,473.90/188,333.99 = 79,146.48/x
  3. Step 3: Cross multiply
    136,473.90x = 188,333.99 × 79,146.48
  4. Step 4: Simplify right side
    136,473.90x = 14,905,971,617.57
  5. Step 5: Solve for x
    x = 14,905,971,617.57/136,473.90
  6. Step 6: Final answer
    x = 109,222.14

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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.