Home / 156,048.40-215,346.84-84,428.38

Finding the Fourth Proportional to 156,048.40, 215,346.84 and 84,428.38

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Solution

The fourth proportional to 156,048.40, 215,346.84 and 84,428.38 is: 116,511.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,048.40 : 215,346.84 = 84,428.38 : x
  2. Step 2: Convert to fraction form
    156,048.40/215,346.84 = 84,428.38/x
  3. Step 3: Cross multiply
    156,048.40x = 215,346.84 × 84,428.38
  4. Step 4: Simplify right side
    156,048.40x = 18,181,384,839.32
  5. Step 5: Solve for x
    x = 18,181,384,839.32/156,048.40
  6. Step 6: Final answer
    x = 116,511.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.