Home / 131,813.04-181,901.16-71,382.72

Finding the Fourth Proportional to 131,813.04, 181,901.16 and 71,382.72

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Solution

The fourth proportional to 131,813.04, 181,901.16 and 71,382.72 is: 98,507.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,813.04 : 181,901.16 = 71,382.72 : x
  2. Step 2: Convert to fraction form
    131,813.04/181,901.16 = 71,382.72/x
  3. Step 3: Cross multiply
    131,813.04x = 181,901.16 × 71,382.72
  4. Step 4: Simplify right side
    131,813.04x = 12,984,599,571.96
  5. Step 5: Solve for x
    x = 12,984,599,571.96/131,813.04
  6. Step 6: Final answer
    x = 98,507.70

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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.