Home / 185,779.27-256,391.21-105,221.13

Finding the Fourth Proportional to 185,779.27, 256,391.21 and 105,221.13

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Solution

The fourth proportional to 185,779.27, 256,391.21 and 105,221.13 is: 145,214.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,779.27 : 256,391.21 = 105,221.13 : x
  2. Step 2: Convert to fraction form
    185,779.27/256,391.21 = 105,221.13/x
  3. Step 3: Cross multiply
    185,779.27x = 256,391.21 × 105,221.13
  4. Step 4: Simplify right side
    185,779.27x = 26,977,771,934.24
  5. Step 5: Solve for x
    x = 26,977,771,934.24/185,779.27
  6. Step 6: Final answer
    x = 145,214.11

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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.