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Finding the Fourth Proportional to 129,959.44, 179,349.60 and 76,285.60

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Solution

The fourth proportional to 129,959.44, 179,349.60 and 76,285.60 is: 105,277.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,959.44 : 179,349.60 = 76,285.60 : x
  2. Step 2: Convert to fraction form
    129,959.44/179,349.60 = 76,285.60/x
  3. Step 3: Cross multiply
    129,959.44x = 179,349.60 × 76,285.60
  4. Step 4: Simplify right side
    129,959.44x = 13,681,791,845.76
  5. Step 5: Solve for x
    x = 13,681,791,845.76/129,959.44
  6. Step 6: Final answer
    x = 105,277.40

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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.