Home / 151,039.87-208,431.65-82,127.50

Finding the Fourth Proportional to 151,039.87, 208,431.65 and 82,127.50

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Solution

The fourth proportional to 151,039.87, 208,431.65 and 82,127.50 is: 113,334.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,039.87 : 208,431.65 = 82,127.50 : x
  2. Step 2: Convert to fraction form
    151,039.87/208,431.65 = 82,127.50/x
  3. Step 3: Cross multiply
    151,039.87x = 208,431.65 × 82,127.50
  4. Step 4: Simplify right side
    151,039.87x = 17,117,970,019.61
  5. Step 5: Solve for x
    x = 17,117,970,019.61/151,039.87
  6. Step 6: Final answer
    x = 113,334.12

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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.