Home / 131,438.46-181,445.61-76,983.06

Finding the Fourth Proportional to 131,438.46, 181,445.61 and 76,983.06

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Solution

The fourth proportional to 131,438.46, 181,445.61 and 76,983.06 is: 106,272.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,438.46 : 181,445.61 = 76,983.06 : x
  2. Step 2: Convert to fraction form
    131,438.46/181,445.61 = 76,983.06/x
  3. Step 3: Cross multiply
    131,438.46x = 181,445.61 × 76,983.06
  4. Step 4: Simplify right side
    131,438.46x = 13,968,238,281.37
  5. Step 5: Solve for x
    x = 13,968,238,281.37/131,438.46
  6. Step 6: Final answer
    x = 106,272.08

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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.