Home / 156,019.79-215,306.66-84,399.63

Finding the Fourth Proportional to 156,019.79, 215,306.66 and 84,399.63

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Solution

The fourth proportional to 156,019.79, 215,306.66 and 84,399.63 is: 116,471.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,019.79 : 215,306.66 = 84,399.63 : x
  2. Step 2: Convert to fraction form
    156,019.79/215,306.66 = 84,399.63/x
  3. Step 3: Cross multiply
    156,019.79x = 215,306.66 × 84,399.63
  4. Step 4: Simplify right side
    156,019.79x = 18,171,802,018.54
  5. Step 5: Solve for x
    x = 18,171,802,018.54/156,019.79
  6. Step 6: Final answer
    x = 116,471.14

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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.