Home / 135,308.90-186,724.43-74,875.86

Finding the Fourth Proportional to 135,308.90, 186,724.43 and 74,875.86

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Solution

The fourth proportional to 135,308.90, 186,724.43 and 74,875.86 is: 103,327.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,308.90 : 186,724.43 = 74,875.86 : x
  2. Step 2: Convert to fraction form
    135,308.90/186,724.43 = 74,875.86/x
  3. Step 3: Cross multiply
    135,308.90x = 186,724.43 × 74,875.86
  4. Step 4: Simplify right side
    135,308.90x = 13,981,151,904.88
  5. Step 5: Solve for x
    x = 13,981,151,904.88/135,308.90
  6. Step 6: Final answer
    x = 103,327.66

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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.