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Finding the Fourth Proportional to 82,260.80, 123,315.60 and 82,210.40

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Solution

The fourth proportional to 82,260.80, 123,315.60 and 82,210.40 is: 123,240.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,260.80 : 123,315.60 = 82,210.40 : x
  2. Step 2: Convert to fraction form
    82,260.80/123,315.60 = 82,210.40/x
  3. Step 3: Cross multiply
    82,260.80x = 123,315.60 × 82,210.40
  4. Step 4: Simplify right side
    82,260.80x = 10,137,824,802.24
  5. Step 5: Solve for x
    x = 10,137,824,802.24/82,260.80
  6. Step 6: Final answer
    x = 123,240.05

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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.