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Finding the Fourth Proportional to 127,437.36, 175,912.32 and 84,980.40

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Solution

The fourth proportional to 127,437.36, 175,912.32 and 84,980.40 is: 117,305.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,437.36 : 175,912.32 = 84,980.40 : x
  2. Step 2: Convert to fraction form
    127,437.36/175,912.32 = 84,980.40/x
  3. Step 3: Cross multiply
    127,437.36x = 175,912.32 × 84,980.40
  4. Step 4: Simplify right side
    127,437.36x = 14,949,099,318.53
  5. Step 5: Solve for x
    x = 14,949,099,318.53/127,437.36
  6. Step 6: Final answer
    x = 117,305.47

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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.