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Finding the Fourth Proportional to 147,221.40, 220,832.10 and 72,353.10

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Solution

The fourth proportional to 147,221.40, 220,832.10 and 72,353.10 is: 108,529.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,221.40 : 220,832.10 = 72,353.10 : x
  2. Step 2: Convert to fraction form
    147,221.40/220,832.10 = 72,353.10/x
  3. Step 3: Cross multiply
    147,221.40x = 220,832.10 × 72,353.10
  4. Step 4: Simplify right side
    147,221.40x = 15,977,887,014.51
  5. Step 5: Solve for x
    x = 15,977,887,014.51/147,221.40
  6. Step 6: Final answer
    x = 108,529.65

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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.