Home / 118,255.06-163,369.70-77,515.89

Finding the Fourth Proportional to 118,255.06, 163,369.70 and 77,515.89

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Solution

The fourth proportional to 118,255.06, 163,369.70 and 77,515.89 is: 107,088.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,255.06 : 163,369.70 = 77,515.89 : x
  2. Step 2: Convert to fraction form
    118,255.06/163,369.70 = 77,515.89/x
  3. Step 3: Cross multiply
    118,255.06x = 163,369.70 × 77,515.89
  4. Step 4: Simplify right side
    118,255.06x = 12,663,747,694.53
  5. Step 5: Solve for x
    x = 12,663,747,694.53/118,255.06
  6. Step 6: Final answer
    x = 107,088.42

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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.