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Finding the Fourth Proportional to 86,905.70, 130,358.55 and 60,179.30

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Solution

The fourth proportional to 86,905.70, 130,358.55 and 60,179.30 is: 90,268.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,905.70 : 130,358.55 = 60,179.30 : x
  2. Step 2: Convert to fraction form
    86,905.70/130,358.55 = 60,179.30/x
  3. Step 3: Cross multiply
    86,905.70x = 130,358.55 × 60,179.30
  4. Step 4: Simplify right side
    86,905.70x = 7,844,886,288.02
  5. Step 5: Solve for x
    x = 7,844,886,288.02/86,905.70
  6. Step 6: Final answer
    x = 90,268.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.