Home / 136,780.03-188,787.93-80,209.63

Finding the Fourth Proportional to 136,780.03, 188,787.93 and 80,209.63

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Solution

The fourth proportional to 136,780.03, 188,787.93 and 80,209.63 is: 110,707.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,780.03 : 188,787.93 = 80,209.63 : x
  2. Step 2: Convert to fraction form
    136,780.03/188,787.93 = 80,209.63/x
  3. Step 3: Cross multiply
    136,780.03x = 188,787.93 × 80,209.63
  4. Step 4: Simplify right side
    136,780.03x = 15,142,610,013.77
  5. Step 5: Solve for x
    x = 15,142,610,013.77/136,780.03
  6. Step 6: Final answer
    x = 110,707.75

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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.