Home / 149,189.47-205,886.68-81,212.04

Finding the Fourth Proportional to 149,189.47, 205,886.68 and 81,212.04

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Solution

The fourth proportional to 149,189.47, 205,886.68 and 81,212.04 is: 112,075.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,189.47 : 205,886.68 = 81,212.04 : x
  2. Step 2: Convert to fraction form
    149,189.47/205,886.68 = 81,212.04/x
  3. Step 3: Cross multiply
    149,189.47x = 205,886.68 × 81,212.04
  4. Step 4: Simplify right side
    149,189.47x = 16,720,477,291.63
  5. Step 5: Solve for x
    x = 16,720,477,291.63/149,189.47
  6. Step 6: Final answer
    x = 112,075.45

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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.