Home / 135,407.72-186,860.35-74,977.06

Finding the Fourth Proportional to 135,407.72, 186,860.35 and 74,977.06

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Solution

The fourth proportional to 135,407.72, 186,860.35 and 74,977.06 is: 103,467.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,407.72 : 186,860.35 = 74,977.06 : x
  2. Step 2: Convert to fraction form
    135,407.72/186,860.35 = 74,977.06/x
  3. Step 3: Cross multiply
    135,407.72x = 186,860.35 × 74,977.06
  4. Step 4: Simplify right side
    135,407.72x = 14,010,239,650.50
  5. Step 5: Solve for x
    x = 14,010,239,650.50/135,407.72
  6. Step 6: Final answer
    x = 103,467.07

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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.