Home / 100,980.20-151,470.30-29,905.40

Finding the Fourth Proportional to 100,980.20, 151,470.30 and 29,905.40

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Solution

The fourth proportional to 100,980.20, 151,470.30 and 29,905.40 is: 44,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,980.20 : 151,470.30 = 29,905.40 : x
  2. Step 2: Convert to fraction form
    100,980.20/151,470.30 = 29,905.40/x
  3. Step 3: Cross multiply
    100,980.20x = 151,470.30 × 29,905.40
  4. Step 4: Simplify right side
    100,980.20x = 4,529,779,909.62
  5. Step 5: Solve for x
    x = 4,529,779,909.62/100,980.20
  6. Step 6: Final answer
    x = 44,858.10

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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.