Home / 134,926.31-186,214.73-78,337.69

Finding the Fourth Proportional to 134,926.31, 186,214.73 and 78,337.69

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Solution

The fourth proportional to 134,926.31, 186,214.73 and 78,337.69 is: 108,115.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,926.31 : 186,214.73 = 78,337.69 : x
  2. Step 2: Convert to fraction form
    134,926.31/186,214.73 = 78,337.69/x
  3. Step 3: Cross multiply
    134,926.31x = 186,214.73 × 78,337.69
  4. Step 4: Simplify right side
    134,926.31x = 14,587,630,934.95
  5. Step 5: Solve for x
    x = 14,587,630,934.95/134,926.31
  6. Step 6: Final answer
    x = 108,115.54

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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.