Home / 137,442.16-189,637.32-80,046.64

Finding the Fourth Proportional to 137,442.16, 189,637.32 and 80,046.64

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Solution

The fourth proportional to 137,442.16, 189,637.32 and 80,046.64 is: 110,445.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,442.16 : 189,637.32 = 80,046.64 : x
  2. Step 2: Convert to fraction form
    137,442.16/189,637.32 = 80,046.64/x
  3. Step 3: Cross multiply
    137,442.16x = 189,637.32 × 80,046.64
  4. Step 4: Simplify right side
    137,442.16x = 15,179,830,284.60
  5. Step 5: Solve for x
    x = 15,179,830,284.60/137,442.16
  6. Step 6: Final answer
    x = 110,445.22

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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.