Home / 100,331.92-138,354.68-70,106.21

Finding the Fourth Proportional to 100,331.92, 138,354.68 and 70,106.21

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Solution

The fourth proportional to 100,331.92, 138,354.68 and 70,106.21 is: 96,674.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,331.92 : 138,354.68 = 70,106.21 : x
  2. Step 2: Convert to fraction form
    100,331.92/138,354.68 = 70,106.21/x
  3. Step 3: Cross multiply
    100,331.92x = 138,354.68 × 70,106.21
  4. Step 4: Simplify right side
    100,331.92x = 9,699,522,252.88
  5. Step 5: Solve for x
    x = 9,699,522,252.88/100,331.92
  6. Step 6: Final answer
    x = 96,674.35

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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.