Home / 666,743.40-1,000,115.10-168,107.40

Finding the Fourth Proportional to 666,743.40, 1,000,115.10 and 168,107.40

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Solution

The fourth proportional to 666,743.40, 1,000,115.10 and 168,107.40 is: 252,161.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,743.40 : 1,000,115.10 = 168,107.40 : x
  2. Step 2: Convert to fraction form
    666,743.40/1,000,115.10 = 168,107.40/x
  3. Step 3: Cross multiply
    666,743.40x = 1,000,115.10 × 168,107.40
  4. Step 4: Simplify right side
    666,743.40x = 168,126,749,161.74
  5. Step 5: Solve for x
    x = 168,126,749,161.74/666,743.40
  6. Step 6: Final answer
    x = 252,161.10

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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.