Home / 131,680.12-181,718.35-74,331.51

Finding the Fourth Proportional to 131,680.12, 181,718.35 and 74,331.51

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Solution

The fourth proportional to 131,680.12, 181,718.35 and 74,331.51 is: 102,577.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,680.12 : 181,718.35 = 74,331.51 : x
  2. Step 2: Convert to fraction form
    131,680.12/181,718.35 = 74,331.51/x
  3. Step 3: Cross multiply
    131,680.12x = 181,718.35 × 74,331.51
  4. Step 4: Simplify right side
    131,680.12x = 13,507,399,164.38
  5. Step 5: Solve for x
    x = 13,507,399,164.38/131,680.12
  6. Step 6: Final answer
    x = 102,577.36

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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.