Home / 131,143.68-180,971.52-71,516.16

Finding the Fourth Proportional to 131,143.68, 180,971.52 and 71,516.16

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Solution

The fourth proportional to 131,143.68, 180,971.52 and 71,516.16 is: 98,688.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,143.68 : 180,971.52 = 71,516.16 : x
  2. Step 2: Convert to fraction form
    131,143.68/180,971.52 = 71,516.16/x
  3. Step 3: Cross multiply
    131,143.68x = 180,971.52 × 71,516.16
  4. Step 4: Simplify right side
    131,143.68x = 12,942,388,179.76
  5. Step 5: Solve for x
    x = 12,942,388,179.76/131,143.68
  6. Step 6: Final answer
    x = 98,688.62

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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.