Home / 151,987.12-228,046.26-81,852.40

Finding the Fourth Proportional to 151,987.12, 228,046.26 and 81,852.40

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Solution

The fourth proportional to 151,987.12, 228,046.26 and 81,852.40 is: 122,813.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,987.12 : 228,046.26 = 81,852.40 : x
  2. Step 2: Convert to fraction form
    151,987.12/228,046.26 = 81,852.40/x
  3. Step 3: Cross multiply
    151,987.12x = 228,046.26 × 81,852.40
  4. Step 4: Simplify right side
    151,987.12x = 18,666,133,692.02
  5. Step 5: Solve for x
    x = 18,666,133,692.02/151,987.12
  6. Step 6: Final answer
    x = 122,813.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.