Home / 156,238.09-215,607.49-84,616.47

Finding the Fourth Proportional to 156,238.09, 215,607.49 and 84,616.47

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Solution

The fourth proportional to 156,238.09, 215,607.49 and 84,616.47 is: 116,770.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,238.09 : 215,607.49 = 84,616.47 : x
  2. Step 2: Convert to fraction form
    156,238.09/215,607.49 = 84,616.47/x
  3. Step 3: Cross multiply
    156,238.09x = 215,607.49 × 84,616.47
  4. Step 4: Simplify right side
    156,238.09x = 18,243,944,497.82
  5. Step 5: Solve for x
    x = 18,243,944,497.82/156,238.09
  6. Step 6: Final answer
    x = 116,770.15

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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.