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Finding the Fourth Proportional to 103,607.87, 155,206.04 and 79,832.93

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Solution

The fourth proportional to 103,607.87, 155,206.04 and 79,832.93 is: 119,590.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,607.87 : 155,206.04 = 79,832.93 : x
  2. Step 2: Convert to fraction form
    103,607.87/155,206.04 = 79,832.93/x
  3. Step 3: Cross multiply
    103,607.87x = 155,206.04 × 79,832.93
  4. Step 4: Simplify right side
    103,607.87x = 12,390,551,751.70
  5. Step 5: Solve for x
    x = 12,390,551,751.70/103,607.87
  6. Step 6: Final answer
    x = 119,590.84

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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.