Home / 149,406.16-206,176.70-81,424.88

Finding the Fourth Proportional to 149,406.16, 206,176.70 and 81,424.88

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Solution

The fourth proportional to 149,406.16, 206,176.70 and 81,424.88 is: 112,364.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,406.16 : 206,176.70 = 81,424.88 : x
  2. Step 2: Convert to fraction form
    149,406.16/206,176.70 = 81,424.88/x
  3. Step 3: Cross multiply
    149,406.16x = 206,176.70 × 81,424.88
  4. Step 4: Simplify right side
    149,406.16x = 16,787,913,056.30
  5. Step 5: Solve for x
    x = 16,787,913,056.30/149,406.16
  6. Step 6: Final answer
    x = 112,364.26

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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.