Home / 129,222.51-178,300.92-75,497.15

Finding the Fourth Proportional to 129,222.51, 178,300.92 and 75,497.15

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Solution

The fourth proportional to 129,222.51, 178,300.92 and 75,497.15 is: 104,170.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,222.51 : 178,300.92 = 75,497.15 : x
  2. Step 2: Convert to fraction form
    129,222.51/178,300.92 = 75,497.15/x
  3. Step 3: Cross multiply
    129,222.51x = 178,300.92 × 75,497.15
  4. Step 4: Simplify right side
    129,222.51x = 13,461,211,302.38
  5. Step 5: Solve for x
    x = 13,461,211,302.38/129,222.51
  6. Step 6: Final answer
    x = 104,170.79

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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.