Home / 131,745.04-181,808.08-72,129.04

Finding the Fourth Proportional to 131,745.04, 181,808.08 and 72,129.04

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Solution

The fourth proportional to 131,745.04, 181,808.08 and 72,129.04 is: 99,538.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,745.04 : 181,808.08 = 72,129.04 : x
  2. Step 2: Convert to fraction form
    131,745.04/181,808.08 = 72,129.04/x
  3. Step 3: Cross multiply
    131,745.04x = 181,808.08 × 72,129.04
  4. Step 4: Simplify right side
    131,745.04x = 13,113,642,274.64
  5. Step 5: Solve for x
    x = 13,113,642,274.64/131,745.04
  6. Step 6: Final answer
    x = 99,538.03

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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.