Home / 131,511.28-181,342.88-83,703.52

Finding the Fourth Proportional to 131,511.28, 181,342.88 and 83,703.52

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Solution

The fourth proportional to 131,511.28, 181,342.88 and 83,703.52 is: 115,420.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,511.28 : 181,342.88 = 83,703.52 : x
  2. Step 2: Convert to fraction form
    131,511.28/181,342.88 = 83,703.52/x
  3. Step 3: Cross multiply
    131,511.28x = 181,342.88 × 83,703.52
  4. Step 4: Simplify right side
    131,511.28x = 15,179,037,382.94
  5. Step 5: Solve for x
    x = 15,179,037,382.94/131,511.28
  6. Step 6: Final answer
    x = 115,420.04

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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.