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Finding the Fourth Proportional to 113,503.70, 170,255.55 and 90,002.90

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Solution

The fourth proportional to 113,503.70, 170,255.55 and 90,002.90 is: 135,004.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,503.70 : 170,255.55 = 90,002.90 : x
  2. Step 2: Convert to fraction form
    113,503.70/170,255.55 = 90,002.90/x
  3. Step 3: Cross multiply
    113,503.70x = 170,255.55 × 90,002.90
  4. Step 4: Simplify right side
    113,503.70x = 15,323,493,241.10
  5. Step 5: Solve for x
    x = 15,323,493,241.10/113,503.70
  6. Step 6: Final answer
    x = 135,004.35

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1.5x scale

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.