Home / 156,243.10-215,615.40-84,623.11

Finding the Fourth Proportional to 156,243.10, 215,615.40 and 84,623.11

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Solution

The fourth proportional to 156,243.10, 215,615.40 and 84,623.11 is: 116,779.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,243.10 : 215,615.40 = 84,623.11 : x
  2. Step 2: Convert to fraction form
    156,243.10/215,615.40 = 84,623.11/x
  3. Step 3: Cross multiply
    156,243.10x = 215,615.40 × 84,623.11
  4. Step 4: Simplify right side
    156,243.10x = 18,246,045,711.89
  5. Step 5: Solve for x
    x = 18,246,045,711.89/156,243.10
  6. Step 6: Final answer
    x = 116,779.85

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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.