Home / 136,521.15-188,376.35-76,078.55

Finding the Fourth Proportional to 136,521.15, 188,376.35 and 76,078.55

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Solution

The fourth proportional to 136,521.15, 188,376.35 and 76,078.55 is: 104,975.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,521.15 : 188,376.35 = 76,078.55 : x
  2. Step 2: Convert to fraction form
    136,521.15/188,376.35 = 76,078.55/x
  3. Step 3: Cross multiply
    136,521.15x = 188,376.35 × 76,078.55
  4. Step 4: Simplify right side
    136,521.15x = 14,331,398,240.02
  5. Step 5: Solve for x
    x = 14,331,398,240.02/136,521.15
  6. Step 6: Final answer
    x = 104,975.66

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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.