Home / 131,669.12-181,690.21-74,303.30

Finding the Fourth Proportional to 131,669.12, 181,690.21 and 74,303.30

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Solution

The fourth proportional to 131,669.12, 181,690.21 and 74,303.30 is: 102,531.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,669.12 : 181,690.21 = 74,303.30 : x
  2. Step 2: Convert to fraction form
    131,669.12/181,690.21 = 74,303.30/x
  3. Step 3: Cross multiply
    131,669.12x = 181,690.21 × 74,303.30
  4. Step 4: Simplify right side
    131,669.12x = 13,500,182,180.69
  5. Step 5: Solve for x
    x = 13,500,182,180.69/131,669.12
  6. Step 6: Final answer
    x = 102,531.12

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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.