Home / 129,367.40-178,528.48-71,230.66

Finding the Fourth Proportional to 129,367.40, 178,528.48 and 71,230.66

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Solution

The fourth proportional to 129,367.40, 178,528.48 and 71,230.66 is: 98,299.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,367.40 : 178,528.48 = 71,230.66 : x
  2. Step 2: Convert to fraction form
    129,367.40/178,528.48 = 71,230.66/x
  3. Step 3: Cross multiply
    129,367.40x = 178,528.48 × 71,230.66
  4. Step 4: Simplify right side
    129,367.40x = 12,716,701,459.20
  5. Step 5: Solve for x
    x = 12,716,701,459.20/129,367.40
  6. Step 6: Final answer
    x = 98,299.12

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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.