Home / 191,489.52-264,245.04-105,431.70

Finding the Fourth Proportional to 191,489.52, 264,245.04 and 105,431.70

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Solution

The fourth proportional to 191,489.52, 264,245.04 and 105,431.70 is: 145,489.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,489.52 : 264,245.04 = 105,431.70 : x
  2. Step 2: Convert to fraction form
    191,489.52/264,245.04 = 105,431.70/x
  3. Step 3: Cross multiply
    191,489.52x = 264,245.04 × 105,431.70
  4. Step 4: Simplify right side
    191,489.52x = 27,859,803,783.77
  5. Step 5: Solve for x
    x = 27,859,803,783.77/191,489.52
  6. Step 6: Final answer
    x = 145,489.97

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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.