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Finding the Fourth Proportional to 153,379.94, 211,631.78 and 96,758.50

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Solution

The fourth proportional to 153,379.94, 211,631.78 and 96,758.50 is: 133,506.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,379.94 : 211,631.78 = 96,758.50 : x
  2. Step 2: Convert to fraction form
    153,379.94/211,631.78 = 96,758.50/x
  3. Step 3: Cross multiply
    153,379.94x = 211,631.78 × 96,758.50
  4. Step 4: Simplify right side
    153,379.94x = 20,477,173,585.13
  5. Step 5: Solve for x
    x = 20,477,173,585.13/153,379.94
  6. Step 6: Final answer
    x = 133,506.20

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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.