Home / 140,104.62-209,103.80-128,207.34

Finding the Fourth Proportional to 140,104.62, 209,103.80 and 128,207.34

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Solution

The fourth proportional to 140,104.62, 209,103.80 and 128,207.34 is: 191,347.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,104.62 : 209,103.80 = 128,207.34 : x
  2. Step 2: Convert to fraction form
    140,104.62/209,103.80 = 128,207.34/x
  3. Step 3: Cross multiply
    140,104.62x = 209,103.80 × 128,207.34
  4. Step 4: Simplify right side
    140,104.62x = 26,808,641,340.86
  5. Step 5: Solve for x
    x = 26,808,641,340.86/140,104.62
  6. Step 6: Final answer
    x = 191,347.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.