Home / 133,077.12-183,677.30-87,763.28

Finding the Fourth Proportional to 133,077.12, 183,677.30 and 87,763.28

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Solution

The fourth proportional to 133,077.12, 183,677.30 and 87,763.28 is: 121,133.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,077.12 : 183,677.30 = 87,763.28 : x
  2. Step 2: Convert to fraction form
    133,077.12/183,677.30 = 87,763.28/x
  3. Step 3: Cross multiply
    133,077.12x = 183,677.30 × 87,763.28
  4. Step 4: Simplify right side
    133,077.12x = 16,120,122,309.54
  5. Step 5: Solve for x
    x = 16,120,122,309.54/133,077.12
  6. Step 6: Final answer
    x = 121,133.69

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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.