Home / 158,400.64-218,592.24-86,780.56

Finding the Fourth Proportional to 158,400.64, 218,592.24 and 86,780.56

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Solution

The fourth proportional to 158,400.64, 218,592.24 and 86,780.56 is: 119,756.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,400.64 : 218,592.24 = 86,780.56 : x
  2. Step 2: Convert to fraction form
    158,400.64/218,592.24 = 86,780.56/x
  3. Step 3: Cross multiply
    158,400.64x = 218,592.24 × 86,780.56
  4. Step 4: Simplify right side
    158,400.64x = 18,969,556,998.85
  5. Step 5: Solve for x
    x = 18,969,556,998.85/158,400.64
  6. Step 6: Final answer
    x = 119,756.82

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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.