Home / 127,721.55-176,255.78-74,037.72

Finding the Fourth Proportional to 127,721.55, 176,255.78 and 74,037.72

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Solution

The fourth proportional to 127,721.55, 176,255.78 and 74,037.72 is: 102,172.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,721.55 : 176,255.78 = 74,037.72 : x
  2. Step 2: Convert to fraction form
    127,721.55/176,255.78 = 74,037.72/x
  3. Step 3: Cross multiply
    127,721.55x = 176,255.78 × 74,037.72
  4. Step 4: Simplify right side
    127,721.55x = 13,049,576,088.02
  5. Step 5: Solve for x
    x = 13,049,576,088.02/127,721.55
  6. Step 6: Final answer
    x = 102,172.08

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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.