Home / 136,681.73-188,453.21-112,397.83

Finding the Fourth Proportional to 136,681.73, 188,453.21 and 112,397.83

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Solution

The fourth proportional to 136,681.73, 188,453.21 and 112,397.83 is: 154,971.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,681.73 : 188,453.21 = 112,397.83 : x
  2. Step 2: Convert to fraction form
    136,681.73/188,453.21 = 112,397.83/x
  3. Step 3: Cross multiply
    136,681.73x = 188,453.21 × 112,397.83
  4. Step 4: Simplify right side
    136,681.73x = 21,181,730,356.28
  5. Step 5: Solve for x
    x = 21,181,730,356.28/136,681.73
  6. Step 6: Final answer
    x = 154,971.20

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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.