Home / 112,039.80-168,059.70-99,792.60

Finding the Fourth Proportional to 112,039.80, 168,059.70 and 99,792.60

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Solution

The fourth proportional to 112,039.80, 168,059.70 and 99,792.60 is: 149,688.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,039.80 : 168,059.70 = 99,792.60 : x
  2. Step 2: Convert to fraction form
    112,039.80/168,059.70 = 99,792.60/x
  3. Step 3: Cross multiply
    112,039.80x = 168,059.70 × 99,792.60
  4. Step 4: Simplify right side
    112,039.80x = 16,771,114,418.22
  5. Step 5: Solve for x
    x = 16,771,114,418.22/112,039.80
  6. Step 6: Final answer
    x = 149,688.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.