Home / 156,278.09-215,663.04-84,658.30

Finding the Fourth Proportional to 156,278.09, 215,663.04 and 84,658.30

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Solution

The fourth proportional to 156,278.09, 215,663.04 and 84,658.30 is: 116,828.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,278.09 : 215,663.04 = 84,658.30 : x
  2. Step 2: Convert to fraction form
    156,278.09/215,663.04 = 84,658.30/x
  3. Step 3: Cross multiply
    156,278.09x = 215,663.04 × 84,658.30
  4. Step 4: Simplify right side
    156,278.09x = 18,257,665,800.07
  5. Step 5: Solve for x
    x = 18,257,665,800.07/156,278.09
  6. Step 6: Final answer
    x = 116,828.06

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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.