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Finding the Fourth Proportional to 100,852.70, 151,019.85 and 74,414.30

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Solution

The fourth proportional to 100,852.70, 151,019.85 and 74,414.30 is: 111,430.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,852.70 : 151,019.85 = 74,414.30 : x
  2. Step 2: Convert to fraction form
    100,852.70/151,019.85 = 74,414.30/x
  3. Step 3: Cross multiply
    100,852.70x = 151,019.85 × 74,414.30
  4. Step 4: Simplify right side
    100,852.70x = 11,238,036,423.86
  5. Step 5: Solve for x
    x = 11,238,036,423.86/100,852.70
  6. Step 6: Final answer
    x = 111,430.20

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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.