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Finding the Fourth Proportional to 168,752.20, 253,128.30 and 129,386.20

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Solution

The fourth proportional to 168,752.20, 253,128.30 and 129,386.20 is: 194,079.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,752.20 : 253,128.30 = 129,386.20 : x
  2. Step 2: Convert to fraction form
    168,752.20/253,128.30 = 129,386.20/x
  3. Step 3: Cross multiply
    168,752.20x = 253,128.30 × 129,386.20
  4. Step 4: Simplify right side
    168,752.20x = 32,751,308,849.46
  5. Step 5: Solve for x
    x = 32,751,308,849.46/168,752.20
  6. Step 6: Final answer
    x = 194,079.30

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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.