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Finding the Fourth Proportional to 127,432, 175,856.36 and 70,843.38

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Solution

The fourth proportional to 127,432, 175,856.36 and 70,843.38 is: 97,763.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,432 : 175,856.36 = 70,843.38 : x
  2. Step 2: Convert to fraction form
    127,432/175,856.36 = 70,843.38/x
  3. Step 3: Cross multiply
    127,432x = 175,856.36 × 70,843.38
  4. Step 4: Simplify right side
    127,432x = 12,458,258,936.90
  5. Step 5: Solve for x
    x = 12,458,258,936.90/127,432
  6. Step 6: Final answer
    x = 97,763.98

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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.