Home / 131,511.52-181,441.47-74,882.80

Finding the Fourth Proportional to 131,511.52, 181,441.47 and 74,882.80

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Solution

The fourth proportional to 131,511.52, 181,441.47 and 74,882.80 is: 103,312.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,511.52 : 181,441.47 = 74,882.80 : x
  2. Step 2: Convert to fraction form
    131,511.52/181,441.47 = 74,882.80/x
  3. Step 3: Cross multiply
    131,511.52x = 181,441.47 × 74,882.80
  4. Step 4: Simplify right side
    131,511.52x = 13,586,845,309.72
  5. Step 5: Solve for x
    x = 13,586,845,309.72/131,511.52
  6. Step 6: Final answer
    x = 103,312.97

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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.