Home / 131,159.28-180,942.48-83,387.10

Finding the Fourth Proportional to 131,159.28, 180,942.48 and 83,387.10

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Solution

The fourth proportional to 131,159.28, 180,942.48 and 83,387.10 is: 115,037.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,159.28 : 180,942.48 = 83,387.10 : x
  2. Step 2: Convert to fraction form
    131,159.28/180,942.48 = 83,387.10/x
  3. Step 3: Cross multiply
    131,159.28x = 180,942.48 × 83,387.10
  4. Step 4: Simplify right side
    131,159.28x = 15,088,268,674.01
  5. Step 5: Solve for x
    x = 15,088,268,674.01/131,159.28
  6. Step 6: Final answer
    x = 115,037.75

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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.