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Finding the Fourth Proportional to 101,305.40, 151,739.40 and 83,809.40

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Solution

The fourth proportional to 101,305.40, 151,739.40 and 83,809.40 is: 125,533.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,305.40 : 151,739.40 = 83,809.40 : x
  2. Step 2: Convert to fraction form
    101,305.40/151,739.40 = 83,809.40/x
  3. Step 3: Cross multiply
    101,305.40x = 151,739.40 × 83,809.40
  4. Step 4: Simplify right side
    101,305.40x = 12,717,188,070.36
  5. Step 5: Solve for x
    x = 12,717,188,070.36/101,305.40
  6. Step 6: Final answer
    x = 125,533.17

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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.