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Finding the Fourth Proportional to 131,015.71, 180,783.44 and 73,646.92

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Solution

The fourth proportional to 131,015.71, 180,783.44 and 73,646.92 is: 101,622.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,015.71 : 180,783.44 = 73,646.92 : x
  2. Step 2: Convert to fraction form
    131,015.71/180,783.44 = 73,646.92/x
  3. Step 3: Cross multiply
    131,015.71x = 180,783.44 × 73,646.92
  4. Step 4: Simplify right side
    131,015.71x = 13,314,142,639.09
  5. Step 5: Solve for x
    x = 13,314,142,639.09/131,015.71
  6. Step 6: Final answer
    x = 101,622.49

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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.