Home / 103,865.71-155,824.79-28,985.80

Finding the Fourth Proportional to 103,865.71, 155,824.79 and 28,985.80

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Solution

The fourth proportional to 103,865.71, 155,824.79 and 28,985.80 is: 43,486.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,865.71 : 155,824.79 = 28,985.80 : x
  2. Step 2: Convert to fraction form
    103,865.71/155,824.79 = 28,985.80/x
  3. Step 3: Cross multiply
    103,865.71x = 155,824.79 × 28,985.80
  4. Step 4: Simplify right side
    103,865.71x = 4,516,706,197.98
  5. Step 5: Solve for x
    x = 4,516,706,197.98/103,865.71
  6. Step 6: Final answer
    x = 43,486.02

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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.