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Finding the Fourth Proportional to 141,729.60, 212,911.20 and 118,401.60

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Solution

The fourth proportional to 141,729.60, 212,911.20 and 118,401.60 is: 177,867.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,729.60 : 212,911.20 = 118,401.60 : x
  2. Step 2: Convert to fraction form
    141,729.60/212,911.20 = 118,401.60/x
  3. Step 3: Cross multiply
    141,729.60x = 212,911.20 × 118,401.60
  4. Step 4: Simplify right side
    141,729.60x = 25,209,026,737.92
  5. Step 5: Solve for x
    x = 25,209,026,737.92/141,729.60
  6. Step 6: Final answer
    x = 177,867.06

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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.