Home / 129,433.27-178,666.66-75,735.58

Finding the Fourth Proportional to 129,433.27, 178,666.66 and 75,735.58

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Solution

The fourth proportional to 129,433.27, 178,666.66 and 75,735.58 is: 104,543.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,433.27 : 178,666.66 = 75,735.58 : x
  2. Step 2: Convert to fraction form
    129,433.27/178,666.66 = 75,735.58/x
  3. Step 3: Cross multiply
    129,433.27x = 178,666.66 × 75,735.58
  4. Step 4: Simplify right side
    129,433.27x = 13,531,423,607.27
  5. Step 5: Solve for x
    x = 13,531,423,607.27/129,433.27
  6. Step 6: Final answer
    x = 104,543.63

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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.