Home / 155,631.47-233,520.11-76,702.64

Finding the Fourth Proportional to 155,631.47, 233,520.11 and 76,702.64

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Solution

The fourth proportional to 155,631.47, 233,520.11 and 76,702.64 is: 115,089.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,631.47 : 233,520.11 = 76,702.64 : x
  2. Step 2: Convert to fraction form
    155,631.47/233,520.11 = 76,702.64/x
  3. Step 3: Cross multiply
    155,631.47x = 233,520.11 × 76,702.64
  4. Step 4: Simplify right side
    155,631.47x = 17,911,608,930.09
  5. Step 5: Solve for x
    x = 17,911,608,930.09/155,631.47
  6. Step 6: Final answer
    x = 115,089.89

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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.