Home / 82,030.20-123,045.30-68,908.20

Finding the Fourth Proportional to 82,030.20, 123,045.30 and 68,908.20

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Solution

The fourth proportional to 82,030.20, 123,045.30 and 68,908.20 is: 103,362.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,030.20 : 123,045.30 = 68,908.20 : x
  2. Step 2: Convert to fraction form
    82,030.20/123,045.30 = 68,908.20/x
  3. Step 3: Cross multiply
    82,030.20x = 123,045.30 × 68,908.20
  4. Step 4: Simplify right side
    82,030.20x = 8,478,830,141.46
  5. Step 5: Solve for x
    x = 8,478,830,141.46/82,030.20
  6. Step 6: Final answer
    x = 103,362.30

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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.