Home / 137,923.04-190,333.92-78,307.04

Finding the Fourth Proportional to 137,923.04, 190,333.92 and 78,307.04

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Solution

The fourth proportional to 137,923.04, 190,333.92 and 78,307.04 is: 108,063.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,923.04 : 190,333.92 = 78,307.04 : x
  2. Step 2: Convert to fraction form
    137,923.04/190,333.92 = 78,307.04/x
  3. Step 3: Cross multiply
    137,923.04x = 190,333.92 × 78,307.04
  4. Step 4: Simplify right side
    137,923.04x = 14,904,485,886.80
  5. Step 5: Solve for x
    x = 14,904,485,886.80/137,923.04
  6. Step 6: Final answer
    x = 108,063.79

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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.