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Finding the Fourth Proportional to 113,106.80, 169,660.20 and 65,673.20

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Solution

The fourth proportional to 113,106.80, 169,660.20 and 65,673.20 is: 98,509.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,106.80 : 169,660.20 = 65,673.20 : x
  2. Step 2: Convert to fraction form
    113,106.80/169,660.20 = 65,673.20/x
  3. Step 3: Cross multiply
    113,106.80x = 169,660.20 × 65,673.20
  4. Step 4: Simplify right side
    113,106.80x = 11,142,128,246.64
  5. Step 5: Solve for x
    x = 11,142,128,246.64/113,106.80
  6. Step 6: Final answer
    x = 98,509.80

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1.5x scale

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.