Home / 156,020.79-215,308.03-84,400.63

Finding the Fourth Proportional to 156,020.79, 215,308.03 and 84,400.63

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Solution

The fourth proportional to 156,020.79, 215,308.03 and 84,400.63 is: 116,472.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,020.79 : 215,308.03 = 84,400.63 : x
  2. Step 2: Convert to fraction form
    156,020.79/215,308.03 = 84,400.63/x
  3. Step 3: Cross multiply
    156,020.79x = 215,308.03 × 84,400.63
  4. Step 4: Simplify right side
    156,020.79x = 18,172,133,376.06
  5. Step 5: Solve for x
    x = 18,172,133,376.06/156,020.79
  6. Step 6: Final answer
    x = 116,472.51

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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.