Home / 131,782.29-181,872.59-75,202.17

Finding the Fourth Proportional to 131,782.29, 181,872.59 and 75,202.17

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Solution

The fourth proportional to 131,782.29, 181,872.59 and 75,202.17 is: 103,786.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,782.29 : 181,872.59 = 75,202.17 : x
  2. Step 2: Convert to fraction form
    131,782.29/181,872.59 = 75,202.17/x
  3. Step 3: Cross multiply
    131,782.29x = 181,872.59 × 75,202.17
  4. Step 4: Simplify right side
    131,782.29x = 13,677,213,055.51
  5. Step 5: Solve for x
    x = 13,677,213,055.51/131,782.29
  6. Step 6: Final answer
    x = 103,786.43

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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.