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Finding the Fourth Proportional to 145,872.80, 218,809.20 and 119,607.20

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Solution

The fourth proportional to 145,872.80, 218,809.20 and 119,607.20 is: 179,410.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,872.80 : 218,809.20 = 119,607.20 : x
  2. Step 2: Convert to fraction form
    145,872.80/218,809.20 = 119,607.20/x
  3. Step 3: Cross multiply
    145,872.80x = 218,809.20 × 119,607.20
  4. Step 4: Simplify right side
    145,872.80x = 26,171,155,746.24
  5. Step 5: Solve for x
    x = 26,171,155,746.24/145,872.80
  6. Step 6: Final answer
    x = 179,410.80

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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.