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Finding the Fourth Proportional to 144,079.60, 198,848.64 and 80,430.64

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Solution

The fourth proportional to 144,079.60, 198,848.64 and 80,430.64 is: 111,004.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,079.60 : 198,848.64 = 80,430.64 : x
  2. Step 2: Convert to fraction form
    144,079.60/198,848.64 = 80,430.64/x
  3. Step 3: Cross multiply
    144,079.60x = 198,848.64 × 80,430.64
  4. Step 4: Simplify right side
    144,079.60x = 15,993,523,378.33
  5. Step 5: Solve for x
    x = 15,993,523,378.33/144,079.60
  6. Step 6: Final answer
    x = 111,004.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.