Home / 131,500.40-181,426.22-74,871.68

Finding the Fourth Proportional to 131,500.40, 181,426.22 and 74,871.68

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Solution

The fourth proportional to 131,500.40, 181,426.22 and 74,871.68 is: 103,297.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,500.40 : 181,426.22 = 74,871.68 : x
  2. Step 2: Convert to fraction form
    131,500.40/181,426.22 = 74,871.68/x
  3. Step 3: Cross multiply
    131,500.40x = 181,426.22 × 74,871.68
  4. Step 4: Simplify right side
    131,500.40x = 13,583,685,887.45
  5. Step 5: Solve for x
    x = 13,583,685,887.45/131,500.40
  6. Step 6: Final answer
    x = 103,297.68

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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.