Home / 113,788.86-170,385.21-90,149.82

Finding the Fourth Proportional to 113,788.86, 170,385.21 and 90,149.82

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Solution

The fourth proportional to 113,788.86, 170,385.21 and 90,149.82 is: 134,988.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,788.86 : 170,385.21 = 90,149.82 : x
  2. Step 2: Convert to fraction form
    113,788.86/170,385.21 = 90,149.82/x
  3. Step 3: Cross multiply
    113,788.86x = 170,385.21 × 90,149.82
  4. Step 4: Simplify right side
    113,788.86x = 15,360,196,012.16
  5. Step 5: Solve for x
    x = 15,360,196,012.16/113,788.86
  6. Step 6: Final answer
    x = 134,988.57

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.