Home / 138,783.12-191,421.92-95,779.04

Finding the Fourth Proportional to 138,783.12, 191,421.92 and 95,779.04

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Solution

The fourth proportional to 138,783.12, 191,421.92 and 95,779.04 is: 132,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,783.12 : 191,421.92 = 95,779.04 : x
  2. Step 2: Convert to fraction form
    138,783.12/191,421.92 = 95,779.04/x
  3. Step 3: Cross multiply
    138,783.12x = 191,421.92 × 95,779.04
  4. Step 4: Simplify right side
    138,783.12x = 18,334,207,732.56
  5. Step 5: Solve for x
    x = 18,334,207,732.56/138,783.12
  6. Step 6: Final answer
    x = 132,106.90

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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.