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Finding the Fourth Proportional to 131,878.79, 181,992.48 and 71,450.94

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Solution

The fourth proportional to 131,878.79, 181,992.48 and 71,450.94 is: 98,602.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,878.79 : 181,992.48 = 71,450.94 : x
  2. Step 2: Convert to fraction form
    131,878.79/181,992.48 = 71,450.94/x
  3. Step 3: Cross multiply
    131,878.79x = 181,992.48 × 71,450.94
  4. Step 4: Simplify right side
    131,878.79x = 13,003,532,858.97
  5. Step 5: Solve for x
    x = 13,003,532,858.97/131,878.79
  6. Step 6: Final answer
    x = 98,602.15

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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.