Home / 100,849.45-151,274.18-86,852.65

Finding the Fourth Proportional to 100,849.45, 151,274.18 and 86,852.65

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Solution

The fourth proportional to 100,849.45, 151,274.18 and 86,852.65 is: 130,278.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,849.45 : 151,274.18 = 86,852.65 : x
  2. Step 2: Convert to fraction form
    100,849.45/151,274.18 = 86,852.65/x
  3. Step 3: Cross multiply
    100,849.45x = 151,274.18 × 86,852.65
  4. Step 4: Simplify right side
    100,849.45x = 13,138,562,975.31
  5. Step 5: Solve for x
    x = 13,138,562,975.31/100,849.45
  6. Step 6: Final answer
    x = 130,278.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.