Home / 82,653.40-123,980.10-68,875.30

Finding the Fourth Proportional to 82,653.40, 123,980.10 and 68,875.30

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Solution

The fourth proportional to 82,653.40, 123,980.10 and 68,875.30 is: 103,312.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,653.40 : 123,980.10 = 68,875.30 : x
  2. Step 2: Convert to fraction form
    82,653.40/123,980.10 = 68,875.30/x
  3. Step 3: Cross multiply
    82,653.40x = 123,980.10 × 68,875.30
  4. Step 4: Simplify right side
    82,653.40x = 8,539,166,581.53
  5. Step 5: Solve for x
    x = 8,539,166,581.53/82,653.40
  6. Step 6: Final answer
    x = 103,312.95

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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.