Home / 145,927.89-201,380.73-78,859.89

Finding the Fourth Proportional to 145,927.89, 201,380.73 and 78,859.89

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Solution

The fourth proportional to 145,927.89, 201,380.73 and 78,859.89 is: 108,826.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,927.89 : 201,380.73 = 78,859.89 : x
  2. Step 2: Convert to fraction form
    145,927.89/201,380.73 = 78,859.89/x
  3. Step 3: Cross multiply
    145,927.89x = 201,380.73 × 78,859.89
  4. Step 4: Simplify right side
    145,927.89x = 15,880,862,215.92
  5. Step 5: Solve for x
    x = 15,880,862,215.92/145,927.89
  6. Step 6: Final answer
    x = 108,826.78

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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.