Home / 148,954.80-205,555.32-81,885.36

Finding the Fourth Proportional to 148,954.80, 205,555.32 and 81,885.36

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Solution

The fourth proportional to 148,954.80, 205,555.32 and 81,885.36 is: 113,000.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,954.80 : 205,555.32 = 81,885.36 : x
  2. Step 2: Convert to fraction form
    148,954.80/205,555.32 = 81,885.36/x
  3. Step 3: Cross multiply
    148,954.80x = 205,555.32 × 81,885.36
  4. Step 4: Simplify right side
    148,954.80x = 16,831,971,378.12
  5. Step 5: Solve for x
    x = 16,831,971,378.12/148,954.80
  6. Step 6: Final answer
    x = 113,000.53

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1.5x scale

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.