Home / 136,451.96-188,304.06-79,102.40

Finding the Fourth Proportional to 136,451.96, 188,304.06 and 79,102.40

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Solution

The fourth proportional to 136,451.96, 188,304.06 and 79,102.40 is: 109,161.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,451.96 : 188,304.06 = 79,102.40 : x
  2. Step 2: Convert to fraction form
    136,451.96/188,304.06 = 79,102.40/x
  3. Step 3: Cross multiply
    136,451.96x = 188,304.06 × 79,102.40
  4. Step 4: Simplify right side
    136,451.96x = 14,895,303,075.74
  5. Step 5: Solve for x
    x = 14,895,303,075.74/136,451.96
  6. Step 6: Final answer
    x = 109,161.52

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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.