Home / 123,505.36-170,440.60-75,731.20

Finding the Fourth Proportional to 123,505.36, 170,440.60 and 75,731.20

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Solution

The fourth proportional to 123,505.36, 170,440.60 and 75,731.20 is: 104,511.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,505.36 : 170,440.60 = 75,731.20 : x
  2. Step 2: Convert to fraction form
    123,505.36/170,440.60 = 75,731.20/x
  3. Step 3: Cross multiply
    123,505.36x = 170,440.60 × 75,731.20
  4. Step 4: Simplify right side
    123,505.36x = 12,907,671,166.72
  5. Step 5: Solve for x
    x = 12,907,671,166.72/123,505.36
  6. Step 6: Final answer
    x = 104,511.02

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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.