Home / 131,402.50-181,336.26-71,786.50

Finding the Fourth Proportional to 131,402.50, 181,336.26 and 71,786.50

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Solution

The fourth proportional to 131,402.50, 181,336.26 and 71,786.50 is: 99,065.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,402.50 : 181,336.26 = 71,786.50 : x
  2. Step 2: Convert to fraction form
    131,402.50/181,336.26 = 71,786.50/x
  3. Step 3: Cross multiply
    131,402.50x = 181,336.26 × 71,786.50
  4. Step 4: Simplify right side
    131,402.50x = 13,017,495,428.49
  5. Step 5: Solve for x
    x = 13,017,495,428.49/131,402.50
  6. Step 6: Final answer
    x = 99,065.81

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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.