Home / 131,621.51-181,637.49-74,260.75

Finding the Fourth Proportional to 131,621.51, 181,637.49 and 74,260.75

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Solution

The fourth proportional to 131,621.51, 181,637.49 and 74,260.75 is: 102,479.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,621.51 : 181,637.49 = 74,260.75 : x
  2. Step 2: Convert to fraction form
    131,621.51/181,637.49 = 74,260.75/x
  3. Step 3: Cross multiply
    131,621.51x = 181,637.49 × 74,260.75
  4. Step 4: Simplify right side
    131,621.51x = 13,488,536,235.52
  5. Step 5: Solve for x
    x = 13,488,536,235.52/131,621.51
  6. Step 6: Final answer
    x = 102,479.73

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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.