Home / 131,860.81-181,796.64-84,031.12

Finding the Fourth Proportional to 131,860.81, 181,796.64 and 84,031.12

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Solution

The fourth proportional to 131,860.81, 181,796.64 and 84,031.12 is: 115,853.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,860.81 : 181,796.64 = 84,031.12 : x
  2. Step 2: Convert to fraction form
    131,860.81/181,796.64 = 84,031.12/x
  3. Step 3: Cross multiply
    131,860.81x = 181,796.64 × 84,031.12
  4. Step 4: Simplify right side
    131,860.81x = 15,276,575,271.44
  5. Step 5: Solve for x
    x = 15,276,575,271.44/131,860.81
  6. Step 6: Final answer
    x = 115,853.80

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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.