Home / 131,012.32-180,801.84-74,433.28

Finding the Fourth Proportional to 131,012.32, 180,801.84 and 74,433.28

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Solution

The fourth proportional to 131,012.32, 180,801.84 and 74,433.28 is: 102,720.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,012.32 : 180,801.84 = 74,433.28 : x
  2. Step 2: Convert to fraction form
    131,012.32/180,801.84 = 74,433.28/x
  3. Step 3: Cross multiply
    131,012.32x = 180,801.84 × 74,433.28
  4. Step 4: Simplify right side
    131,012.32x = 13,457,673,981.24
  5. Step 5: Solve for x
    x = 13,457,673,981.24/131,012.32
  6. Step 6: Final answer
    x = 102,720.68

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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.