Home / 127,731-176,435.20-103,621.56

Finding the Fourth Proportional to 127,731, 176,435.20 and 103,621.56

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Solution

The fourth proportional to 127,731, 176,435.20 and 103,621.56 is: 143,132.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,731 : 176,435.20 = 103,621.56 : x
  2. Step 2: Convert to fraction form
    127,731/176,435.20 = 103,621.56/x
  3. Step 3: Cross multiply
    127,731x = 176,435.20 × 103,621.56
  4. Step 4: Simplify right side
    127,731x = 18,282,490,662.91
  5. Step 5: Solve for x
    x = 18,282,490,662.91/127,731
  6. Step 6: Final answer
    x = 143,132.76

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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.