Home / 103,702.12-155,645.89-53,135.64

Finding the Fourth Proportional to 103,702.12, 155,645.89 and 53,135.64

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Solution

The fourth proportional to 103,702.12, 155,645.89 and 53,135.64 is: 79,750.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,702.12 : 155,645.89 = 53,135.64 : x
  2. Step 2: Convert to fraction form
    103,702.12/155,645.89 = 53,135.64/x
  3. Step 3: Cross multiply
    103,702.12x = 155,645.89 × 53,135.64
  4. Step 4: Simplify right side
    103,702.12x = 8,270,343,978.52
  5. Step 5: Solve for x
    x = 8,270,343,978.52/103,702.12
  6. Step 6: Final answer
    x = 79,750.97

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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.