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Finding the Fourth Proportional to 127,709.52, 176,239.06 and 74,025.64

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Solution

The fourth proportional to 127,709.52, 176,239.06 and 74,025.64 is: 102,155.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,709.52 : 176,239.06 = 74,025.64 : x
  2. Step 2: Convert to fraction form
    127,709.52/176,239.06 = 74,025.64/x
  3. Step 3: Cross multiply
    127,709.52x = 176,239.06 × 74,025.64
  4. Step 4: Simplify right side
    127,709.52x = 13,046,209,209.50
  5. Step 5: Solve for x
    x = 13,046,209,209.50/127,709.52
  6. Step 6: Final answer
    x = 102,155.34

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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.