Home / 163,901.20-245,928.60-85,104.40

Finding the Fourth Proportional to 163,901.20, 245,928.60 and 85,104.40

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Solution

The fourth proportional to 163,901.20, 245,928.60 and 85,104.40 is: 127,696.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,901.20 : 245,928.60 = 85,104.40 : x
  2. Step 2: Convert to fraction form
    163,901.20/245,928.60 = 85,104.40/x
  3. Step 3: Cross multiply
    163,901.20x = 245,928.60 × 85,104.40
  4. Step 4: Simplify right side
    163,901.20x = 20,929,605,945.84
  5. Step 5: Solve for x
    x = 20,929,605,945.84/163,901.20
  6. Step 6: Final answer
    x = 127,696.48

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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.