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Finding the Fourth Proportional to 127,139.64, 175,453.74 and 70,551.96

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Solution

The fourth proportional to 127,139.64, 175,453.74 and 70,551.96 is: 97,362.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,139.64 : 175,453.74 = 70,551.96 : x
  2. Step 2: Convert to fraction form
    127,139.64/175,453.74 = 70,551.96/x
  3. Step 3: Cross multiply
    127,139.64x = 175,453.74 × 70,551.96
  4. Step 4: Simplify right side
    127,139.64x = 12,378,605,246.33
  5. Step 5: Solve for x
    x = 12,378,605,246.33/127,139.64
  6. Step 6: Final answer
    x = 97,362.28

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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.