Home / 191,261.12-263,929.91-105,206.21

Finding the Fourth Proportional to 191,261.12, 263,929.91 and 105,206.21

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Solution

The fourth proportional to 191,261.12, 263,929.91 and 105,206.21 is: 145,178.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,261.12 : 263,929.91 = 105,206.21 : x
  2. Step 2: Convert to fraction form
    191,261.12/263,929.91 = 105,206.21/x
  3. Step 3: Cross multiply
    191,261.12x = 263,929.91 × 105,206.21
  4. Step 4: Simplify right side
    191,261.12x = 27,767,065,536.74
  5. Step 5: Solve for x
    x = 27,767,065,536.74/191,261.12
  6. Step 6: Final answer
    x = 145,178.83

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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.