Home / 115,205.40-172,808.10-67,966.20

Finding the Fourth Proportional to 115,205.40, 172,808.10 and 67,966.20

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Solution

The fourth proportional to 115,205.40, 172,808.10 and 67,966.20 is: 101,949.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,205.40 : 172,808.10 = 67,966.20 : x
  2. Step 2: Convert to fraction form
    115,205.40/172,808.10 = 67,966.20/x
  3. Step 3: Cross multiply
    115,205.40x = 172,808.10 × 67,966.20
  4. Step 4: Simplify right side
    115,205.40x = 11,745,109,886.22
  5. Step 5: Solve for x
    x = 11,745,109,886.22/115,205.40
  6. Step 6: Final answer
    x = 101,949.30

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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.