Home / 134,835.15-186,109.52-78,264.75

Finding the Fourth Proportional to 134,835.15, 186,109.52 and 78,264.75

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Solution

The fourth proportional to 134,835.15, 186,109.52 and 78,264.75 is: 108,026.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,835.15 : 186,109.52 = 78,264.75 : x
  2. Step 2: Convert to fraction form
    134,835.15/186,109.52 = 78,264.75/x
  3. Step 3: Cross multiply
    134,835.15x = 186,109.52 × 78,264.75
  4. Step 4: Simplify right side
    134,835.15x = 14,565,815,055.42
  5. Step 5: Solve for x
    x = 14,565,815,055.42/134,835.15
  6. Step 6: Final answer
    x = 108,026.84

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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.