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Finding the Fourth Proportional to 127,376.28, 175,785.12 and 70,784.28

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Solution

The fourth proportional to 127,376.28, 175,785.12 and 70,784.28 is: 97,685.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,376.28 : 175,785.12 = 70,784.28 : x
  2. Step 2: Convert to fraction form
    127,376.28/175,785.12 = 70,784.28/x
  3. Step 3: Cross multiply
    127,376.28x = 175,785.12 × 70,784.28
  4. Step 4: Simplify right side
    127,376.28x = 12,442,823,153.91
  5. Step 5: Solve for x
    x = 12,442,823,153.91/127,376.28
  6. Step 6: Final answer
    x = 97,685.56

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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.