Home / 118,815.20-163,965.03-65,102.30

Finding the Fourth Proportional to 118,815.20, 163,965.03 and 65,102.30

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Solution

The fourth proportional to 118,815.20, 163,965.03 and 65,102.30 is: 89,841.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,815.20 : 163,965.03 = 65,102.30 : x
  2. Step 2: Convert to fraction form
    118,815.20/163,965.03 = 65,102.30/x
  3. Step 3: Cross multiply
    118,815.20x = 163,965.03 × 65,102.30
  4. Step 4: Simplify right side
    118,815.20x = 10,674,500,572.57
  5. Step 5: Solve for x
    x = 10,674,500,572.57/118,815.20
  6. Step 6: Final answer
    x = 89,841.20

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1.5x scale

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.