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Finding the Fourth Proportional to 153,804.45, 230,289.80 and 79,776.93

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Solution

The fourth proportional to 153,804.45, 230,289.80 and 79,776.93 is: 119,449.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,804.45 : 230,289.80 = 79,776.93 : x
  2. Step 2: Convert to fraction form
    153,804.45/230,289.80 = 79,776.93/x
  3. Step 3: Cross multiply
    153,804.45x = 230,289.80 × 79,776.93
  4. Step 4: Simplify right side
    153,804.45x = 18,371,812,855.43
  5. Step 5: Solve for x
    x = 18,371,812,855.43/153,804.45
  6. Step 6: Final answer
    x = 119,449.16

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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.