Home / 149,742.77-206,639.10-81,762.60

Finding the Fourth Proportional to 149,742.77, 206,639.10 and 81,762.60

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Solution

The fourth proportional to 149,742.77, 206,639.10 and 81,762.60 is: 112,829.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,742.77 : 206,639.10 = 81,762.60 : x
  2. Step 2: Convert to fraction form
    149,742.77/206,639.10 = 81,762.60/x
  3. Step 3: Cross multiply
    149,742.77x = 206,639.10 × 81,762.60
  4. Step 4: Simplify right side
    149,742.77x = 16,895,350,077.66
  5. Step 5: Solve for x
    x = 16,895,350,077.66/149,742.77
  6. Step 6: Final answer
    x = 112,829.16

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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.