Home / 123,728.31-170,748.95-70,012.35

Finding the Fourth Proportional to 123,728.31, 170,748.95 and 70,012.35

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Solution

The fourth proportional to 123,728.31, 170,748.95 and 70,012.35 is: 96,619.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,728.31 : 170,748.95 = 70,012.35 : x
  2. Step 2: Convert to fraction form
    123,728.31/170,748.95 = 70,012.35/x
  3. Step 3: Cross multiply
    123,728.31x = 170,748.95 × 70,012.35
  4. Step 4: Simplify right side
    123,728.31x = 11,954,534,899.47
  5. Step 5: Solve for x
    x = 11,954,534,899.47/123,728.31
  6. Step 6: Final answer
    x = 96,619.24

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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.