Home / 137,032.08-189,101.16-80,448.72

Finding the Fourth Proportional to 137,032.08, 189,101.16 and 80,448.72

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Solution

The fourth proportional to 137,032.08, 189,101.16 and 80,448.72 is: 111,017.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,032.08 : 189,101.16 = 80,448.72 : x
  2. Step 2: Convert to fraction form
    137,032.08/189,101.16 = 80,448.72/x
  3. Step 3: Cross multiply
    137,032.08x = 189,101.16 × 80,448.72
  4. Step 4: Simplify right side
    137,032.08x = 15,212,946,272.52
  5. Step 5: Solve for x
    x = 15,212,946,272.52/137,032.08
  6. Step 6: Final answer
    x = 111,017.41

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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.