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Finding the Fourth Proportional to 104,960.60, 157,440.90 and 100,878.20

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Solution

The fourth proportional to 104,960.60, 157,440.90 and 100,878.20 is: 151,317.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,960.60 : 157,440.90 = 100,878.20 : x
  2. Step 2: Convert to fraction form
    104,960.60/157,440.90 = 100,878.20/x
  3. Step 3: Cross multiply
    104,960.60x = 157,440.90 × 100,878.20
  4. Step 4: Simplify right side
    104,960.60x = 15,882,354,598.38
  5. Step 5: Solve for x
    x = 15,882,354,598.38/104,960.60
  6. Step 6: Final answer
    x = 151,317.30

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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.