Home / 135,488.15-186,985.13-75,077.75

Finding the Fourth Proportional to 135,488.15, 186,985.13 and 75,077.75

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Solution

The fourth proportional to 135,488.15, 186,985.13 and 75,077.75 is: 103,613.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,488.15 : 186,985.13 = 75,077.75 : x
  2. Step 2: Convert to fraction form
    135,488.15/186,985.13 = 75,077.75/x
  3. Step 3: Cross multiply
    135,488.15x = 186,985.13 × 75,077.75
  4. Step 4: Simplify right side
    135,488.15x = 14,038,422,843.86
  5. Step 5: Solve for x
    x = 14,038,422,843.86/135,488.15
  6. Step 6: Final answer
    x = 103,613.66

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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.