Home / 170,678.63-255,938.72-99,621.79

Finding the Fourth Proportional to 170,678.63, 255,938.72 and 99,621.79

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Solution

The fourth proportional to 170,678.63, 255,938.72 and 99,621.79 is: 149,386.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,678.63 : 255,938.72 = 99,621.79 : x
  2. Step 2: Convert to fraction form
    170,678.63/255,938.72 = 99,621.79/x
  3. Step 3: Cross multiply
    170,678.63x = 255,938.72 × 99,621.79
  4. Step 4: Simplify right side
    170,678.63x = 25,497,072,278.75
  5. Step 5: Solve for x
    x = 25,497,072,278.75/170,678.63
  6. Step 6: Final answer
    x = 149,386.43

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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.