Home / 131,678.37-181,739.81-74,335.17

Finding the Fourth Proportional to 131,678.37, 181,739.81 and 74,335.17

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Solution

The fourth proportional to 131,678.37, 181,739.81 and 74,335.17 is: 102,595.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,678.37 : 181,739.81 = 74,335.17 : x
  2. Step 2: Convert to fraction form
    131,678.37/181,739.81 = 74,335.17/x
  3. Step 3: Cross multiply
    131,678.37x = 181,739.81 × 74,335.17
  4. Step 4: Simplify right side
    131,678.37x = 13,509,659,672.12
  5. Step 5: Solve for x
    x = 13,509,659,672.12/131,678.37
  6. Step 6: Final answer
    x = 102,595.89

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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.