Home / 156,038.40-215,333.01-84,418.38

Finding the Fourth Proportional to 156,038.40, 215,333.01 and 84,418.38

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Solution

The fourth proportional to 156,038.40, 215,333.01 and 84,418.38 is: 116,497.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,038.40 : 215,333.01 = 84,418.38 : x
  2. Step 2: Convert to fraction form
    156,038.40/215,333.01 = 84,418.38/x
  3. Step 3: Cross multiply
    156,038.40x = 215,333.01 × 84,418.38
  4. Step 4: Simplify right side
    156,038.40x = 18,178,063,864.72
  5. Step 5: Solve for x
    x = 18,178,063,864.72/156,038.40
  6. Step 6: Final answer
    x = 116,497.37

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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.