Home / 149,001.12-205,624.10-81,018.55

Finding the Fourth Proportional to 149,001.12, 205,624.10 and 81,018.55

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Solution

The fourth proportional to 149,001.12, 205,624.10 and 81,018.55 is: 111,806.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,001.12 : 205,624.10 = 81,018.55 : x
  2. Step 2: Convert to fraction form
    149,001.12/205,624.10 = 81,018.55/x
  3. Step 3: Cross multiply
    149,001.12x = 205,624.10 × 81,018.55
  4. Step 4: Simplify right side
    149,001.12x = 16,659,366,886.63
  5. Step 5: Solve for x
    x = 16,659,366,886.63/149,001.12
  6. Step 6: Final answer
    x = 111,806.99

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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.