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Finding the Fourth Proportional to 180,409.79, 248,959.38 and 99,840.71

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Solution

The fourth proportional to 180,409.79, 248,959.38 and 99,840.71 is: 137,776.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,409.79 : 248,959.38 = 99,840.71 : x
  2. Step 2: Convert to fraction form
    180,409.79/248,959.38 = 99,840.71/x
  3. Step 3: Cross multiply
    180,409.79x = 248,959.38 × 99,840.71
  4. Step 4: Simplify right side
    180,409.79x = 24,856,281,260.36
  5. Step 5: Solve for x
    x = 24,856,281,260.36/180,409.79
  6. Step 6: Final answer
    x = 137,776.79

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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.