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Finding the Fourth Proportional to 130,212.80, 179,692.80 and 73,624.40

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Solution

The fourth proportional to 130,212.80, 179,692.80 and 73,624.40 is: 101,601.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,212.80 : 179,692.80 = 73,624.40 : x
  2. Step 2: Convert to fraction form
    130,212.80/179,692.80 = 73,624.40/x
  3. Step 3: Cross multiply
    130,212.80x = 179,692.80 × 73,624.40
  4. Step 4: Simplify right side
    130,212.80x = 13,229,774,584.32
  5. Step 5: Solve for x
    x = 13,229,774,584.32/130,212.80
  6. Step 6: Final answer
    x = 101,601.18

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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.