Home / 131,819.16-181,911.11-71,389.92

Finding the Fourth Proportional to 131,819.16, 181,911.11 and 71,389.92

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Solution

The fourth proportional to 131,819.16, 181,911.11 and 71,389.92 is: 98,518.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,819.16 : 181,911.11 = 71,389.92 : x
  2. Step 2: Convert to fraction form
    131,819.16/181,911.11 = 71,389.92/x
  3. Step 3: Cross multiply
    131,819.16x = 181,911.11 × 71,389.92
  4. Step 4: Simplify right side
    131,819.16x = 12,986,619,233.06
  5. Step 5: Solve for x
    x = 12,986,619,233.06/131,819.16
  6. Step 6: Final answer
    x = 98,518.45

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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.