Home / 148,928.85-205,525.71-85,287.15

Finding the Fourth Proportional to 148,928.85, 205,525.71 and 85,287.15

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Solution

The fourth proportional to 148,928.85, 205,525.71 and 85,287.15 is: 117,698.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,928.85 : 205,525.71 = 85,287.15 : x
  2. Step 2: Convert to fraction form
    148,928.85/205,525.71 = 85,287.15/x
  3. Step 3: Cross multiply
    148,928.85x = 205,525.71 × 85,287.15
  4. Step 4: Simplify right side
    148,928.85x = 17,528,702,057.63
  5. Step 5: Solve for x
    x = 17,528,702,057.63/148,928.85
  6. Step 6: Final answer
    x = 117,698.50

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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.