Home / 90,944.60-136,416.90-87,445.40

Finding the Fourth Proportional to 90,944.60, 136,416.90 and 87,445.40

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Solution

The fourth proportional to 90,944.60, 136,416.90 and 87,445.40 is: 131,168.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,944.60 : 136,416.90 = 87,445.40 : x
  2. Step 2: Convert to fraction form
    90,944.60/136,416.90 = 87,445.40/x
  3. Step 3: Cross multiply
    90,944.60x = 136,416.90 × 87,445.40
  4. Step 4: Simplify right side
    90,944.60x = 11,929,030,387.26
  5. Step 5: Solve for x
    x = 11,929,030,387.26/90,944.60
  6. Step 6: Final answer
    x = 131,168.10

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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.