Home / 137,565.15-189,835.97-83,830.56

Finding the Fourth Proportional to 137,565.15, 189,835.97 and 83,830.56

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Solution

The fourth proportional to 137,565.15, 189,835.97 and 83,830.56 is: 115,683.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,565.15 : 189,835.97 = 83,830.56 : x
  2. Step 2: Convert to fraction form
    137,565.15/189,835.97 = 83,830.56/x
  3. Step 3: Cross multiply
    137,565.15x = 189,835.97 × 83,830.56
  4. Step 4: Simplify right side
    137,565.15x = 15,914,055,254.09
  5. Step 5: Solve for x
    x = 15,914,055,254.09/137,565.15
  6. Step 6: Final answer
    x = 115,683.77

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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.