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Finding the Fourth Proportional to 115,419.60, 173,129.40 and 95,720.40

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Solution

The fourth proportional to 115,419.60, 173,129.40 and 95,720.40 is: 143,580.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,419.60 : 173,129.40 = 95,720.40 : x
  2. Step 2: Convert to fraction form
    115,419.60/173,129.40 = 95,720.40/x
  3. Step 3: Cross multiply
    115,419.60x = 173,129.40 × 95,720.40
  4. Step 4: Simplify right side
    115,419.60x = 16,572,015,419.76
  5. Step 5: Solve for x
    x = 16,572,015,419.76/115,419.60
  6. Step 6: Final answer
    x = 143,580.60

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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.