Home / 129,098.69-178,152.63-71,736.53

Finding the Fourth Proportional to 129,098.69, 178,152.63 and 71,736.53

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Solution

The fourth proportional to 129,098.69, 178,152.63 and 71,736.53 is: 98,994.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,098.69 : 178,152.63 = 71,736.53 : x
  2. Step 2: Convert to fraction form
    129,098.69/178,152.63 = 71,736.53/x
  3. Step 3: Cross multiply
    129,098.69x = 178,152.63 × 71,736.53
  4. Step 4: Simplify right side
    129,098.69x = 12,780,051,486.57
  5. Step 5: Solve for x
    x = 12,780,051,486.57/129,098.69
  6. Step 6: Final answer
    x = 98,994.43

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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.