Home / 68,133.40-102,200.10-21,386.20

Finding the Fourth Proportional to 68,133.40, 102,200.10 and 21,386.20

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Solution

The fourth proportional to 68,133.40, 102,200.10 and 21,386.20 is: 32,079.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,133.40 : 102,200.10 = 21,386.20 : x
  2. Step 2: Convert to fraction form
    68,133.40/102,200.10 = 21,386.20/x
  3. Step 3: Cross multiply
    68,133.40x = 102,200.10 × 21,386.20
  4. Step 4: Simplify right side
    68,133.40x = 2,185,671,778.62
  5. Step 5: Solve for x
    x = 2,185,671,778.62/68,133.40
  6. Step 6: Final answer
    x = 32,079.30

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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.