Home / 142,927.60-197,078.56-91,175.66

Finding the Fourth Proportional to 142,927.60, 197,078.56 and 91,175.66

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Solution

The fourth proportional to 142,927.60, 197,078.56 and 91,175.66 is: 125,719.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,927.60 : 197,078.56 = 91,175.66 : x
  2. Step 2: Convert to fraction form
    142,927.60/197,078.56 = 91,175.66/x
  3. Step 3: Cross multiply
    142,927.60x = 197,078.56 × 91,175.66
  4. Step 4: Simplify right side
    142,927.60x = 17,968,767,779.85
  5. Step 5: Solve for x
    x = 17,968,767,779.85/142,927.60
  6. Step 6: Final answer
    x = 125,719.37

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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.