Home / 123,512.63-170,428.06-71,841.17

Finding the Fourth Proportional to 123,512.63, 170,428.06 and 71,841.17

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Solution

The fourth proportional to 123,512.63, 170,428.06 and 71,841.17 is: 99,129.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,512.63 : 170,428.06 = 71,841.17 : x
  2. Step 2: Convert to fraction form
    123,512.63/170,428.06 = 71,841.17/x
  3. Step 3: Cross multiply
    123,512.63x = 170,428.06 × 71,841.17
  4. Step 4: Simplify right side
    123,512.63x = 12,243,751,231.23
  5. Step 5: Solve for x
    x = 12,243,751,231.23/123,512.63
  6. Step 6: Final answer
    x = 99,129.55

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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.