Home / 156,158.91-215,501.01-84,540.45

Finding the Fourth Proportional to 156,158.91, 215,501.01 and 84,540.45

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Solution

The fourth proportional to 156,158.91, 215,501.01 and 84,540.45 is: 116,666.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,158.91 : 215,501.01 = 84,540.45 : x
  2. Step 2: Convert to fraction form
    156,158.91/215,501.01 = 84,540.45/x
  3. Step 3: Cross multiply
    156,158.91x = 215,501.01 × 84,540.45
  4. Step 4: Simplify right side
    156,158.91x = 18,218,552,360.85
  5. Step 5: Solve for x
    x = 18,218,552,360.85/156,158.91
  6. Step 6: Final answer
    x = 116,666.75

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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.