Home / 142,084.47-196,062.60-78,418.17

Finding the Fourth Proportional to 142,084.47, 196,062.60 and 78,418.17

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Solution

The fourth proportional to 142,084.47, 196,062.60 and 78,418.17 is: 108,209.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,084.47 : 196,062.60 = 78,418.17 : x
  2. Step 2: Convert to fraction form
    142,084.47/196,062.60 = 78,418.17/x
  3. Step 3: Cross multiply
    142,084.47x = 196,062.60 × 78,418.17
  4. Step 4: Simplify right side
    142,084.47x = 15,374,870,297.44
  5. Step 5: Solve for x
    x = 15,374,870,297.44/142,084.47
  6. Step 6: Final answer
    x = 108,209.37

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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.